Answer:
C) first appearance of most invertebrates.
Explanation:
The Cambrian Explosion occurred 542 mya. The earliest complex animals arose in the sea at the beginning of the Cambrian Explosion. It would take another half a billion years for mammals to rise. Multicellular life dates back 1.2 bya, but more cpomplex life, such as animals, did not occur until the Cambrian Explosion. In the beginning of the Cambrian Explosion, many soft-bodied animals, such as jellyfish and sea anemones appeared.
Answer:
C
Explanation:
First appearance of most invertebrates
1. Compare gaseous biogeochemical cycle and sedimentary biogeochemical cycle.
Answer:
Gaseous cycles include those of nitrogen, oxygen, carbon, and water; sedimentary cycles include those of iron, calcium, phosphorus, and other more earthbound elements. In a sedimentary cycle elements move from land to water to sediment. Main reservoirs are the soil and sedimentary rocks.
HELP ASAP
Select the correct answer from each drop-down menu.
Enzymes are part of the ________ digestion process. Their function is to break down_________. Amylase is a digestive enzyme secreted _________ and is responsible for breaking down__________.
1. chemical, mechanical
2.macromolecules, atoms, vitamins
3.in the stomach by the gallbladder, in the small intestine by the liver, in the mouth by the pancreas
4. proteins, nuclei acids, lipids, starch
Answer:
Salivary glands secrete salivary amylase, an enzyme that begins the breakdown of starch into glucose. Mucus moistens food and lubricates the esophagus. Bicarbonate ions in saliva neutralize the acids in foods
Answer:
1. Chemical
2. macromolecules
3. In the pancreas
4. starch
Explanation:
Some species of hares are brown most of the year, but change color to white in the winter. This allows them to blend in through the seasons.
Where are these organisms adapted to live?
deciduous forests
desert
tropical rain forests
savanna
Answer:
Snowshoe hares have an interesting adaptation that helps protect them against predators. Depending on the season, their fur can be a different color. During the winter, snowshoe hares are white, which helps them blend in with the snow. When the seasons change to spring and summer, snowshoe hares turn a reddish-brown.
Why would it be important to understand what controls the number and types
Prior to the 1960s, what did people think controlled the number of herbivores in a food web?
What conclusion did Paine arrive at after seven years?
What does he mean by his claim that some species are more equal than others? PLEASEE ANSWER
Because they are of not de same character and specie
Why is cotyledon the biggest part of a seed?
Answer:
it is its outer cover of the seed
Answer:
The cotyledon is the largest part of the inside of the bean. Cotyledons are rich in proteins, starch, and fats. These stored nutrients are supplied to the seedling during germination. Like a chick embryo it has a yolk and a baby has an umbilical cord, a bean seed has a cotyledon to act as a source of food. At the top of the cotyledon is the epicotyl. Hence it is the biggest part of the seed .
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2.01 Properties of Water Lab Report
50 POINTS FOR WHOEVER ANSWERS CORRECTLY!! <3
If you were to be conducting an experiment on how temperature change affect surface tension what would be the Objective of the experiment, the hypothesis, the variables (Like Independent Variable, Dependent, Variable, Controlled Variable) The materials needed to conduct it, the data and observations collected during the experiment, and the conclusion to your experiment. Also, what would be some real world applications to the importance of the properties of water?
Please make sure to answer all of the questions within this one, for any clarification needed it is basically a lab report on how surface tension is effected by the temperature of water. Please answer and Thank you!
Answer: The main properties of water are its polarity, cohesion, adhesion, surface tension, high specific heat, and evaporative cooling.
Water has the unique ability to dissolve many polar and ionic substances. This is important to all living things because, as water travels through the water cycle, it takes many valuable nutrients along with it! Water has high heat capacity.
The Objective of the experiment, the hypothesis, the variables Like Independent Variable, Dependent, Variable, Controlled Variable
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Snapdragon color is an incomplete dominant trait. A red flower (RR) is crossed with white flower (ww). What color are the flowers that are (RW)?
Asap plz help less than 3 minutes
Answer:
pink
Explanation:
this pattern is inheritance is described as incomplete dominance meaning that neither of the alice's is completely dominant Over The Other both analysis can be seen at the same time
Which of the following is true about global climate
A The climate has remained constant over that past 200 years
B) The global climate has been increasing over the past 200 years
The global climate has been increasing each year for the past 100,000 years
D
It has remained constant over 100,000 years
This chart shows four atoms, labeled W, X, Y, and
These stoms can combine with each other to form
molecules
Which combination of atoms will form a molecule, but
not a compound?
Element
Atom
w
Х
Y
Z
Wand X
X and Y
O W and a
Y and
oxygen
hydrogen
carbon
oxygen
Answer:
carbon
Explanation:
because because it is not an element
Label the lettered phases of the cell cycle according to the diagram in Figure. 1-1.
Figure 1-1
A =
B =
C =
D =
Answer:
Explanation:
A = G1 phase (Growth phase)
B = S phase ( Growth and DNA Synthesis)
C = G2 phase (Growth and final preparations for division)
D = Mitotic phase (Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis)
An organism which depends on a host for its survival is a
A)virus
B)bacterium
C)human
D)fungus
Reviewing Mendel's Pea Plant QUICK CHECK Gregor Mendel studied pea plants to determine the patterns of inheritance. What is not a reason Mendel used pea plants in his experiments? Check all that apply. They reproduced sexually. They were drought resistant. They had traits that were easy to observe. They only had two traits to study. DONE
Answer:
Drought resistant and Only had two traits to study
Explanation:
Answer:
The answer is B. They were drought resistant and D. They only had two traits to study
Explanation:
Good Luck!!!
Which organism would be the least affected by the toxic mercury?
a)zooplankton
b)small fish
c)larger fish
d)shark
Answer:
Zooplankton(A)
Explanation:
Because the toxic mercury builds up in the bigger organsims
40 in 2000 US Caucasian newborns have Tay Sachs Disease. T for normal is dominant over t for Tay sachs Disease.
a.) What percent of the above population have Tay Sachs Disease (tt or q2)?
b.) Calculate the allelic frequencies of p and q for this example
c.) Now, calculate the genotypic frequencies for the population
Answer:
b
Explanation:
because its the only responsible answer and I dint understand how to do this
What are invasive species?
A) Native species that have no predators.
B) Nonnative species that are superior competitors.
C) Nonnative species that do not survive.
D) Native species that prey on nonnative species.
Answer:
B
Explanation:
Answer:
B.
Explanation:
Invasive species imply that the species are not from the location that you are studying, so we can immediately eliminate A and D, as they mention native species (species that already live in the area). From this, we have B and C, and nonnative species do not become invasive if they die easily. So, we can eliminate C, leaving us with B as the answer. Nonnative species will most likely disrupt the ecosystem in the location that is being studied, so B makes the most sense. Hope this helps and please let me know if you still need help!
Which of the following statements accurately describes how water moves
through Earth and its atmosphere?
O A. Water moves from the atmosphere to bodies of water and then
evaporates into space.
B. Water cycles between the atmosphere, bodies of water, and the
sun.
C. Water is constantly cycling between the atmosphere, bodies of
water, and living things.
D. Water enters the atmosphere from outer space, moves throwthyn
living things, and evaporates.
IS THIS CORRECT?? PLEASE ANSWER
Answer:
BESTIE THAT'S FALSE.
it's four
I need to write a 5 paragraph essays! HELPPPP
Explanation:
The core threats to biodiversity are human population growth and unsustainable resource use. To date, the most significant causes of extinctions are habitat loss, introduction of exotic species, and overharvesting.
Answer:
Essay written by Applepi101
Biodiversity, and Humanity's Threat to Life.
A variation in genetics, species, and of course, an ecosystem level, biodiversity is the single most important thing we must preserve in order for the food chain to be in balance, and for one species to not overtake the scale. This is what makes Earth unique from every other planet on the solar system. Biodiversity provides everyone's needs for food and water, shelter and much more. The importance of this single word is astounding, not only because of the fact that it is needed to conserve humans, but all life on Earth. Biodiversity comes from two words. The first part, "Bio" meaning "life" and the second part, "diversity" meaning "variety". Combine the two, and you have the variety of life.
It is important to understand that biodiversity can be studied on a global scale, or microscopically, genetically, or environmentally. One example is genetic biodiversity in the cross-breeding of dogs, and environmental biodiversity is how diverse the ecosystems around us are. Preserving this is what humans have the task of while living on this beautiful planet. Although humans are widely consumer based, taking from the environment, the question is how much longer can the Earth sustain the rapid population increases while taking and modifying the Earth's environment?
Zooming in on our oceans, which cover over 70 percent of the earth's surface, they are becoming increasingly polluted and threatened each year, with climate change, fishing, commercial agriculture, pollution, and oil spills. Studies show that in 2050, there will be more plastic in the ocean than fish. In the oceans, coral reefs are the most biologically diverse ecosystem in the world, seeing that they have a number of fish communities to tend to. But our reefs are dying, which means less fish, which means less animals that eat the fish, like birds, and less animals that eat the birds, and so on, which I see as a ripple effect, one drop on the pond shakes the whole pond, the whole food chain, the whole scale, but not as much humans.
At the same time, large parts of the Amazon are being cut down and burnt. Tree clearing has cut down the forest by 15 precent already. In Brazil, which has half the forest, 19 percent has disappeared. Those number are just numbers though, but when we have no trees to look at, no flowers to smell, no grass to play in, it will be too late. Many have warned that at one point, the rainforest that contains over 3 million known species, will turn into nothing but a dry scrubland, and we don't have a clue when it will reach it's tipping point.
How can we help? Reducing, reusing, and recycling is just the beginning, started climate strikes, campaigns, and protests is a great way to get started. Volunteering for non-profits that are dedicated to taking young interns to help weed, garden, and grow plants is another effective way. The future depends on us, starts with us, and it is our responsibility to commit ourselves to making sure that we should not need a list to keep track of endangered or extinct species, and we must act now.
Hope this helps!!
--Applepi101
Which feature of Earth is part of the geosphere?
O air
O fish
O rocks
Oglaciers
Answer:
Rocks
Explanation:
The geosphere includes the rocks and minerals on Earth – from the molten rock and heavy metals in the deep interior of the planet to the sand on beaches and peaks of mountains. The geosphere also includes the non-living parts of soils and the skeletons of animals that may become fossilized over geologic time.
The feature of Earth that is a part of geosphere is rocks. The correct option is C.
What is geosphere?There are several contradictory definitions of geosphere. It can be used to refer to the lithosphere, hydrosphere, cryosphere, and atmosphere as a whole.
The geosphere's various collectives can exchange various mass and/or energy fluxes.
The geosphere includes all of Earth's rocks, from partially melted rock beneath the crust to ancient, towering mountains to grains of sand on a beach.
The geosphere and hydrosphere both provide habitat for the biosphere, which is a global ecosystem that includes all living things on Earth.
The Geosphere is in charge of the distribution of rocks, minerals, and soils. It also manages the difficult natural hazards that shape the land and have an impact on our lives.
Thus, the correct option is C.
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[tex]what \: is \: chyme \: \: \: \: {?}[/tex]
Small intestine in the form of a thick paste called chyme. When the inner walls of the intestine are thrown into millions of processes called villi. The muscle layers of the small intestine are thinner than those of the stomach.
Hope This Helps You ❤️A pair of butterflies reproduces and has one thousand offspring. All one thousand of the offspring have the alleles Aa. What is the most likely combination of alleles (genotype) for each parent? Explain your answer.
Answer:
It is expected that each parent is homo-zygous for each trait (i.e., one parent has genotype AA and the other parent has genotype aa)
Explanation:
An F1 hybrid is the first filial generation of the progeny of distinctly different parental types. In this case, it is expected that each parent is homo-zygous for each trait, thereby 100% of all offspring will have genotype Aa (i.e., parental cross: AA x aa >> F1 = 100% Aa). On the other hand, in a cross where one parent is heterozygous for the trait (Aa) and the other parent is homo-zygous (either AA or aa), only 50% of all offspring will have genotype Aa.
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which of these is a way the immune system works with other body systems?
A. It replaces skin cells
B. It produces osteoblasts
C. It filters mucus
D. It filters blood
Answer:
B
Explanation:
B
Explanation:
A. It replaces skin cells
Hope it is helpful to you
Cual es la relacion entre la disponibilidad y el consumo de recursos renovables y no renovables entre los paises desarrollados y los paises en vias de desarrollo
Answer:
Diferente.
Explicación:
La relación entre la disponibilidad y el consumo de recursos renovables y no renovables entre países desarrollados y en desarrollo es diferente debido a la presencia de tecnología que permite a los países desarrollados utilizar sus recursos renovables y no renovables disponibles. Los países desarrollados están más avanzados que los países en desarrollo en el campo de la tecnología y también la economía, por lo que pueden utilizar recursos renovables en comparación con los recursos no renovables.
During a dry year, which plant will most likely be able to survive in clay soil?
Answer:
A
Explanation:
Answer:4
Explanation:
A force of 10,000 N is applied to a wall that does not move. How much work is performed?
Answer:
W= F×d
F = 10,000 N
d = 0 m ----> W= 10,000 × 0 = 0 j
describe how potatoes and eggs might have been digested with the help of enzymes.
The potato can make you feel at home in any part of the world. According to the International Potato Center, the potato is the third most grown crop in the world, with more than 300 million metric tons produced annually. The United Nations declared 2008 as the International Year of the Potato because of its importance in feeding the poor and hungry. If not deep-fried and loaded with butter or cheese, potatoes have a lot to offer nutritionally, and they are easy to digest as well.
Salivary amylase, an enzyme secreted with the saliva, acts at the long polysaccharide units that make up starch, to shape disaccharides known as maltose. The action of salivary amylase keeps until the potato reaches the belly.
How are eggs digested?The belly empties the chyme containing the damaged egg pieces into the small intestine, where the general public of protein digestion occurs. The pancreas secretes digestive juice that consists of extra enzymes that in addition smash down the protein fragments.
Digestive enzymes play a key position in breaking down the meals you eat. those proteins accelerate chemical reactions that turn vitamins into substances that your digestive tract can take in. Your saliva has digestive enzymes in it. Some of your organs, consisting of your pancreas, gallbladder, and liver, additionally release them.
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Which of the following functions at the same organizational level as the kidney in the human excretory system?
A. skeleton
B. epithelial tissue
C. urinary bladder
D. a squamous cell
Answer:
urinary bladder
Explanation:
In biology, there are five levels of organization namely: cell, tissue, organ, system, and organism. A collection of one forms the other, starting from the smallest CELLS. The human excretory system consists of organs that make it up.
Kidney is one of the organs that make up the excretory system. According to this question, the urinary bladder is also an ORGAN, which means that the kidney and bladder as ORGANS are functioning at the same level of organization in the excretory system.
Which gland helps fight against cold
A. Pituitary gland
B. Thyroid
C. Adrenal gland
D. Pancreas
Answer:
A. Pituitary gland
Explanation:
In DNA replication, continuously synthesis occurs on the leading strand Multiple choice question. toward the origin of replication. without RNA primers. in the 5' to 3' direction. and creates Okazaki fragments.
Answer:
toward the origin of replication
Explanation:
A replication fork is a structure formed during DNA replication when specific enzymes (i.e., helicases) separate both DNA strands at the origin of replication. DNA is always synthesized in the 5' to 3' direction, thereby DNA can be synthesized continuously on the leading strand, because the growth of this strand proceeds in the same direction as the movement of the replication fork, while DNA synthesized in several short segments on the lagging strand which are called 'Okazaki fragments'. DNA polymerases are enzymes that can only add nucleotides to the 3' end of a DNA strand, thereby they require the synthesis of short stretches of RNA or 'RNA primers', which are necessary for DNA replication of the lagging strand.