Answer:
the male that determines the sex of the offspring when fertilization occurs.
Explanation:
Which of the following describes the impact on human health from global climate change?
A) Excess greenhouse gases will cause competition among vectors for hosts, and the vectors will die off.
B) Global climate change will result in the warming of cooler regions and will increase the spreading of disease.
C) Melting glaciers will keep regions too cold and prevent vectors from migrating to these regions.
D) Warmer climates will prevent vectors from traveling to new regions and infecting more humans.
Answer: B
Explanation: B) Global climate change will result in the warming of cooler regions and will increase the spreading of disease.
Answer:
B) Global climate change will result in the warming of cooler regions and will increase the spreading of disease.
Explanation:
It will be right on the quiz. Have a great, meaningful, and productive day, fellows!
In the cross between (R1R2 x R1R2) the ratio of resulting (R1R2) in the cross is:
In which situation is work being done?
A. A woman lies on the ground.
OB. A boy stands on a chair.
C. A man pushes against a wall.
OD. A girl throws a ball.
Economic profit equals zero when total revenue (TR) equals total cost (TC).
The statement is true. Economic profit equals zero when total revenue (TR) equals total cost (TC).
In Economics, total cost is defined as the sum of costs that is incurred by firm for the production of certain level of output.
Mathematically, it is calculated as:
TC (total cost) = TFC (total fixed cost) + TVC (total variable cost)
Fixed cost refers to a cost that does not change with an increase or decrease in the number of goods or services produced or sold.
Variable cost changes with an increase or decrease in the number of goods or services produced or sold.
Total revenue is also called gross revenue. It is the total amount of income your company brings in from selling your products/services.
When total revenue (TR) equals total cost (TC), economic profit equals zero.
Hence, the given statement is true.
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The hydrogen ion reservoir is located in the ____________________ and ATP synthesis occurs in the ____________________. In order to facilitate reproduction, independent of cell division, both of these organelles have _________________________ and _________________________.
What happens when a coral pushes out the algae that live there?
coral cooling
coral bleaching
algae bloom
coral warming
what is the primary distinction of being an animal?
A) ability to reproduce
B) having a backbone
C) ability to digest
D) ability to turn sunlight into energy
Answer: A) ability to reproduce
Explanation:
DNA and RNA are structurally similar but also have some notable differences. RNA has uracil in place of thymine as one of its bases, uses ribose in place of deoxyribose, and
Question 4 options:
A)
can't form base pairs.
B)
has a different phosphate group in its backbone.
C)
is a polymer of nucleotides and amines.
D)
often exists as a single-stranded molecul
Answer:
D.) often exists as a single-stranded molecule
Explanation:
One notable difference between DNA and RNA is that DNA consists of 2 nucleotide strands and RNA consists of 1.
Which source of renewable energy is the most location-dependent in its production?
hydroelectric
geothermal
wind
solar
Max's teacher told the class that he was providing an exam with five difficult questions because this exam would take them less time to complete than a typical exam with twenty questions. The teacher said he would let them leave school when they finished and start their weekend. What obstacle did Max's teacher use to gain the students' support?
Belief perseverance
Fixation
Framing effect
Overconfidence
Max's teacher use to gain the student's support by adding the obstacle of framing effect in the examinations. Thus, the correct option is C.
What is Framing effect?The framing effect is a cognitive bias in which the brain makes all the decisions about information depending upon how the information is presented to them. In this, people decide the options which were based on whether the options are presented with positive or negative connotations to them. For examples: the students doing examination.
People tend to avoid the risk when a positive frame is presented to them however they seek the risks when a negative frame is presented to them. Framing effect occurs when the decisions which people make are changed as a result of the way in which the outcomes are described to them.
Therefore, the correct option is C.
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What is the only cephalopod with an external shell?
A. nautilus
B. cuttlefish
C. squid
D. octopus
Answer:
the only cephalopod with an external shell is A. nautilus
Answer:
a. nautilus
Explanation:
Nautiluses are the only cephalopod with an external shell.
Which fossil fuel needs to migrate into
pockets in order for humans to extract it
from the ground?
A. gold
B. aluminum
C. petroleum
D. uranium
Answer:
LA RESPUESTA ES LA C) PETROLEUM
Explanation:
LA C) ES PORQUE SEGUN YO ES DE ACUERDO EL TEXTO AUE HAS MANDADO EN TU TAREA
look at the picture
Answer:
Gamma rays have a higher frequency than radio waves
look at the picture
Answer:
Clean + Renewable
Explanation:
Answer:
Clean and Renewable
Explanation:
hope it helps
what do we call the outer layer of the nucleas?
Explain the scientific interpretation of the fossils found in the cradle of humankind.
The scientific interpretation of the fossils found in the cradle of humankind,
The Cradle of Humankind region comprises 15 major fossil sites, some of which date back 5-million years.
The name Cradle of Humankind reflects the fact that the site has produced a substantially large number of hominin fossils, some the oldest ever found, dating as far back as 3.5 million years ago.
How was the Cradle of Humankind formed?The Cradle of Humankind Site comprises a strip of a dozen dolomitic limestone caves including the fossilized remains of ancient forms of animals, plants and most notably, hominids. The dolomite in which the caves formed, started out as coral reefs flourishing in a worm shallow sea about 2.3 billion years ago.
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Which organelle in the table is correctly matched with its function?
The organelle in the table that correctly matches its function is the ribosome because it produces proteins.
What is a ribosome?A ribosome is an organelle that functions as a protein factory in the cell, whereas vacuoles contain dissolved materials and store water.
Mitochondria are energy producers by the process of cellular respiration, and lysosomes contain hydrolytic enzymes.
In conclusion, the organelle is a ribosome that produces proteins.
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Look on the box that says ‘show genotype’. What is the genotype of the offspring
Explain how a disease could cause an effect on the overall function of an organ system by describing a specific example and identify a technology that has been developed to replace the lost cellular function.
plssss help
Answer:
Bradycardia, a type of heart disease that causes heartbeats to be slowed down, disappear, or not able to travel, can be treated with a pacemaker, which helps stimulate heartbeats artificially.
Explanation:
Pick one of the following genetic variations that have occurred in human evolution. Then pick one of the three causes of genetic variation (meiosis, replication errors, environmental impacts) and make a claim as to why you think that particular cause of genetic variation was the cause of the change. Use supporting research and/or data to support your claim.
- Smaller bodies
- Smaller brains
- Smaller teeth and jaws
Smaller teeth and jaws are due to genetic variation, which occurred by mutations (errors in DNA replication) and were selected to fill a suitable niche.
What is evolution?Evolution is the mechanism of change of one species to adapt given environment, whereas mutations are the raw material for evolution.
In this regard, scientific evidence supports the fact that jaws evolved to become shorter in humans and thus adapt to a pastoral lifestyle.
In conclusion, smaller teeth and jaws emerged by mutations and were selected to fill a suitable niche.
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Front legs of a cat and the arms of a human share a bone structure that suggests a common evolutionary lineage. Therefore these skeletal structures are
Answer:
homologous
Explanation:
Homologous organs are organs that share some similarities in different organisms but whose function differ in these organisms.
:)
Forelimbs of cat and arms of human share a similar bone structure, suggesting a common lineage. These type of common structure are said to be homologous structures.
Organs that function differently in different organisms but have some similarities are known as homologous organs. Although the organs are structurally similar, they serve different purposes. One of the arguments used by scientists to support evolution is the existence of homologous organs.
Even though their structures are based on the same five-digit plan, human arms and the front legs of cats serve different purposes.
Therefore, forelimbs of cat and forelimbs of humans are said to be homologous structures.
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A water-soluble hormone approaches its target cell. What can we conclude about this hormone?
The hormone originated in the ovaries or testes
The hormone will be a non-steroid
The hormone is hydrophobic and will need to combine with protein molecules to enter the cell
The hormone released will signal the beginning of puberty
If a water-soluble hormone approaches its target cell, it can be concluded that the hormone will be a non-steroid (option B).
What is an hormone?An hormone is any substance produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.
Hormones are usually proteinous in nature and can either be water-soluble or fat-soluble depending on whether it can dissolve in water or fat respectively.
According to this question, a water-soluble hormone approaches its target cell. This suggests that that hormone must be a non-steroid i.e. does not contain fat.
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Based on the punnet square above, what is the probability that an offspring from this cross will have a homozygous recessive genotype ?
A. 100%
B. 50%
C. 25%
D. 0%
Answer:
C)25%
Explanation:
the results of the punnet square are:
1. TT (homozygous dom)
2. Tt (heterozygous)
3. Tt (heterozygous)
4. tt (homozygous recessive)
capital letters are dominant and lowercase are recessive
Answer:
25%Explanation:
Homozygous Recessive: (homo means same) Both letters representing the genes are the same, and they are recessive (lowercase t)
Each box within a punnett square represents a 25% chance possible outcome.
There is only one box in this punnett square wherein both letters are lowercase t.
HELP THIS IS REALLY SERIOUS I NEED HELP AHHH I DONT WANT TO FAIL!! question:Those who support the alien theory believe that the ancient Egyptians were very primitive. What evidence about the ancient Egyptians suggests that this claim is inaccurate? Check all that apply. They built the Seven Wonders of the Ancient World. They invented an early version of the wheel. They had a well-developed agricultural system. They raised domesticated animals. They developed a writing system. They used early forms of tools.
The evidence about the ancient Egyptians that suggests that this claim is inaccurate are:
They had a well-developed agricultural system.They raised domesticated animals.They developed a writing system.They used early forms of tools.What is a Supporting Detail?This refers to the use of evidence in order to validate a claim that is made through the use of factual or statistical data.
Hence, we can see that based on the fact that people thought that the pyramids of Egypt were built by aliens was false because there are supporting details to prove them otherwise and they are listed above.
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4. Which of the following are parts of the amniotic reptile egg? (Choose all that apply) amniotic fluid albumen water space shell membrane
The parts of the amniotic reptile egg include the amniotic fluid, the albumen, and the shell.
Parts of an amniotic reptile's eggThe various parts of amniotic reptile's eggs include:
The external shell which serves as a protective layerThe yolk which supplies energy to the embryoThe albumen supplies the embryo with water and proteinsThe extra-embryonic membranes - the chorion, the allantois, and the amnion.The chorion serves as a channel for gaseous exchange between the embryo and the environment.
The allantois partially functions as waste manager and in respiration. It stores nitrogenous wastes and gets rid of them as well as participates in gaseous exchange along with the chorion.
The amnion protects the embryo against mechanical shocks. It also protects the developing embryo from being dehydrated.
In other words, the 3 extra-embryonic membranes protect, facilitate gaseous exchange, and ensure that wastes are properly disposed of.
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Answer: Everything Except Water space
Explanation:
How can you use more renewable sources of energy? Select all that apply.
Use carpools or public transportation.
Stop using all forms of energy altogether.
Grow your own food and buy local products.
Wait for governments to make laws.
Answer: a and c
Explanation: You don't need to wait on the government to make laws to be able to be energy efficient, nor do you have to stop using all forms of energy altogether.
which of the following is a cause of a DNA mutation?
The Smokey the Bear campaign attempted to suppress and eliminate wildfires from forested areas altogether. Explain how fire suppression can negatively impact the health of a forest ecosystem?
A. Suppression allows weaker, more vulnerable trees that would have been weeded out by fire to survive.
B. Suppression leads to less diversity of tree species, so beetles spread more quickly between trees.
C. Suppression leads to equal/even-age stands of mature trees, which the beetles prefer.
1. Naturally occurring wildfires are most frequently caused by lightning
2. NATURAL forest fires can temporarily increase fertility of a region
3. burning process releases nutrients which then fertilize the soil.
3a. fire chemically converts nutrients bound in dead plant tissues and the soil surface to more available forms
3b. fire indirectly increases mineralization rates through its impacts on soil microorganisms (Schoch and Binkley 1986).
4. slash and burn process successfully clears land for agriculture and introduces fertilizing nutrients into the soil, leaving it in excellent condition to grow crops.
AP ENVIRONMENTAL SCIENCE
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ASAP PLS There are lots of big words in genetics! One way to start thinking about the process of meiosis is to ask yourself some questions.
If two parents are contributing genetic material to their offspring, why don’t the genes and chromosomes double in each generation?
If each parent has two sets of genes and chromosomes, why do their offspring receive only one set from each parent?
Answer:
1) the genes and chromosomes do not double after each generations because parental sex cells are haploid and only contain one set of chromosomes. During fertilization the two cells fuse to form a diploid zygote with two copies of genes and chromosomes. For example a normal human has 46 chromosomes (2 copies of 23 chromosomes) during reproduction gametes which contain 23 chromosomes (haploid) fuse to form an offspring with the correct number of chromosomes ( 23 + 23 = 46).
2) offspring only receive one set of chromosomes from each parent so to maintain the chromosome number of humans. If this did not happen you would not be the same species.
What happens to the trees in the taiga as global temperatures rise?
They grow bigger and use more resources.
They lose their needles in the winter.
They grow farther up the mountains.
They grow farther down the mountains.
Answer:
C
Explanation:
because they grow more than others time