Answer:
Explanation:
Over the course of the past 2 million years, the Earth's plant life has undergone significant changes. During this time period, many plant species went extinct, likely due to a combination of factors such as climate change, disease, and human activity. The most notable extinction event occurred during the Cretaceous period, where a significant portion of plant species went extinct. This was likely due to a massive asteroid impact that caused widespread destruction and altered the planet's climate.However, it's not all doom and gloom, as there have also been instances of recovery and diversification in plant life throughout the millions of years. For example, after the mass extinction event of the Cretaceous period, new plant species evolved and diversified to fill the ecological niches left behind by the extinct species. This process of speciation and adaptation has led to the diverse array of plant life we see on Earth today.In summary, plants have gone through a complex history of extinction, recovery, and diversification over the course of the past 2 million years. The most notable extinction event occurred during the Cretaceous period, but new species have evolved and adapted over the millions of years, leading to the diverse array of plant life we see today.
Which protists contain both chloroplasts and eyespots?
A .amoeba and paramecia
B. volvox and paramecia
C. euglena and amoeba
D. euglena and volvox
.
D. Euglena and volvox contain both chloroplasts and eyespots.
What are protists?
Protists are single-celled microorganisms that belong to the kingdom Protista. They are unicellular organisms that are not classified as bacteria, fungi, or animals, and are the simplest of the eukaryotes (organisms with a true nucleus and other membrane-bound organelles). Protists are found in a wide variety of habitats, from freshwater to marine environments, and are important for their role in the food chain, as well as for their impact on human health.
Protists come in a wide range of shapes and sizes, from amoeba-like organisms that can change shape, to algae with chloroplasts, to parasites that can cause diseases in humans and other animals. Some protists can move on their own, while others are immobile. Some can reproduce asexually, while others reproduce sexually. Despite their diverse forms and functions, all protists are considered to be part of the same kingdom because of their shared characteristics and evolutionary relationships.
Learn more about protists, here:
https://brainly.com/question/1626285
#SPJ6
Which type of rock does B represent?
Igneous rock
Metamorphic rock_
Rock formed by compaction
Rock formed by heat and pressure
Answer:
Igneous rock
Explanation:
Solidified lava is an igneous rock.
Where a stream leaves a mountain range youll find an?
Difference between eukaryotic cells and prokaryotic cells.
I hope this helps you
........
Answer:
eukaryotic cells are those which have a membrane-bound nucleus that contains genetic material, as well as organelles that are also membrane-bound. Whereas, prokaryotes are cells that don’t have a nucleus or membrane-encased organelles.
Explanation:
hope it will help you !
Realiza un esquema de la clasificación de los nutrientes, y enliste los alimentos en los que consten características, dónde se encuentran y función
Answer:
Carbohydrates
Protein
Fat
Vitamin
Minerals
and Water
Explanation:
Carbohydrates
Carbohydrates are energy giving foods, sources are Honey, maize, rice and sweet fruits.
Protein
Protein is required for the growth, sources are meat, egg, fish, cheese and milk.
Fat
Fat is concentrated source of energy, sources are sesame and sunflower oils.
Vitamin
Vitamin is body building, sources are fruits.
Minerals
Minerals are also a kind a vitamin which is important for different functions of the body, sources are sodium, fluorine and potassium.
Water
Water is for hydration of the body, source is water
A student uses a marble simulation to illustrate genetic drift. She starts with a
population of 50 individuals, represented by 25 red marbles and 25 blue marbles.
The red marbles represent an allele for pointed ears ih mice, and blue marbles
represent an allele for rounded ears. Which statement below is true?
The allelic frequency for rounded ears is 25.
The allelic frequency for pointed ears is 75 (75%).
The allelic frequency for rounded ears is 1.0.
The allelic frequency for pointed ears is 0.5 (50%).
Answer:
The allelic frequency for pointed ears is 0.5 (50%).
Explanation:
The frequency of alleles in a population must add up to 1 (100%).
The allelic frequency for pointed ears is 0.5 (50%).
What is allelic frequency ?The allele frequency represents the incidence of a gene variant in a population. Alleles are variant forms of a gene that are located at the same position, or genetic locus, on a chromosome.
What is the difference between gene frequency and allele frequency?Gene frequency, which more or less refers to the allele frequency, is the measurement where the number of repeats of the same allele is measured over a certain period of time.
To learn more about allelic frequency , here
https://brainly.com/question/23362399?referrer=searchResults
#SPJ2
Rearrange the steps of a tsunami formation in the correct order
1. two tectonic plates slide past each other underwater, causing a large movement of water
2. large ocean waves form
3. large ocean waves move in all directions away from the shifting plates
4. large ocean waves slow down and increase in height as they reach the coast
Answer:
two tectonic plates slide past each other underwater, causing a large movement of water large ocean waves form .large ocean waves move in all directions away from the shifting plates .large ocean waves slow down and increase in height as they reach the coastExplanation:
Tsunamis are initiated underwater and usually happen as a result of underwater earthquakes which can be initiated when tectonic plates slide past each other.
This causes a large movement of water such that large waves form and move away in al directions from the source. As these waves approach the shore they slow down speed but this only increases their height such that when they make landfall the effect could be devastating.
Can someone help me really quick!!
Answer:
12 degrees C
Explanation:
12 C = 53.6 F
Which generalization can be made from the data in the table?
1.The higher the temperature, the fewer chirps there will be in 10 seconds.
2.The chirps occur closer together as the temperature increases.
3.The chirps become farther apart as the temperature increases.
4.There is no relationship between temperature and the time between chirps.
Answer:
answer is C
Explanation:
it's according to the table as temperature has increased chirps has gradually decreased.
Answer:
The correct answer is B.
Explanation:
The chirps occur closer together. I took finished my test!
can someone write me a essay of Photosynthesis for 30 points URGENT!!! It has to be highschool level
Answer:
Here, I got u homie!
Explanation:
Photosynthesis is the process through which green plants and other specific living organisms utilize light energy to convert water and carbon dioxide in to simple sugars. Through photosynthesis, green plants are able to manufacture their own food which is essential for their growth.
Plz give brainliest
which phase best describes meiosis I?
Answer:
Division of homologous chromosomes.
I hope it's helpful!
if a middle level species were removed from the community, how might the flow of energy be affected? Explain your answer.
ALL of the following conditions can lead to a dramatic decline in the size of the population for
a given species EXCEPT...
-Pollution
-Eradication of invasive species
-Loss of habitat.
-Overhunting
-Climate change
Answer:
Pollution
Explanation:
which category of birds can find food on both land and large body of water
Answer:
A seabird can find food on both land and sea
When organisms
they increase in size.
Answer:
The increase in size and changes in shape of a developing organism depend on the increase in the number and size of cells that make up the individual. Increase in cell number occurs by a precise cellular reproductive mechanism called mitosis.
Explanation:
Ronald observes a sparrow's nest in a shrub outside his home. The table below describes his findings.
Week
Observations
1
Six eggs were laid in the nest.
3
Five eggs hatched, and one egg did not hatch.
One of the chicks disappeared.
7
Three of the chicks learned to fly, and another one disappeared.
What part of natural selection did Ronald observe?
adaptation
overproduction
selection
variation
Answer:
B. Overproduction
Explanation:
Overproduction is one of the main part of natural selection whereby an organism reproduces more offspring, of which only a few would be able to survive given the environmental condition amd factors that would be against the survival of the offspring to maturity.
From Ronald observation, we can see that the bird produces more eggs than would survive. Only 3 of the chicks survived.
Please help me can you please help really quick
Answer:
b
Explanation:
The greatest amount of kinetic energy is at the lowest point of the roller coaster. The least amount of kinetic energy is at the highest point of the roller coaster
Answer:
b
Explanation:
11)
How are genetic mutations passed from parent to offspring?
Answer:
Some mutations are hereditary because they are passed down to an offspring from a parent carrying a mutation through the germ line, meaning through an egg or sperm cell carrying the mutation. There are also nonhereditary mutations that occur in cells outside of the germ line, which are called somatic mutations.
I hope it's helpful!
Answer:
★ Mutated gametes (sex cells) fuse to create offspring.
Genetic mutations or germline mutations can be defined as a permanent change in the DNA sequence of germ cells (cells, which form ovum and sperm). These mutations can pass from one generation to other when a mutated sperm or mutated oocyte (gametes) get fertilized with another oocyte or sperm.
A germline mutation, present in a single-celled zygote will present in all cells of a muticellular organism, a single-celled zygote divides and produces all of the cells in that organism.
Explanation:
Hope you have a great day :)
I HAVE BEEN STUCK HERE FOR 5 MINUTES...!
vague repetitive pictures
Answer:
Should be C
Explanation:
D is wrong because standing out should mean they are spotted more easily, which means they get hunted down more often/ prey spot them easier
B is kind of weird because larger population = more competition, and I remember owls work alone
A is suspicious because they are both tawny owls and I don't understand how less food they need to be significant
C sounds plausible because the gray feather can be a "stronger" gene or something
A cell contains the structure shown below that contains chlorophyll and is the site of photosynthesis. What
other cell structure that is not found in all eukaryotic cells, is likely to be found in this cell?
A. Mitochondria
B. Cell Membrane
C. Cell wall
D. Cytoplasm
The cell wall is found in plant cells but is absent in animal cells. Therefore, option C is correct.
What is a cell wall?Cell walls are a specific type of extracellular matrix that covers every plant cell. Many of the traits that set plant cells apart from animal cells are caused by the cell wall.
Plant cells have a cell wall that surrounds their plasma membrane and offers tensile strength as well as defense against osmotic and mechanical stress. Additionally, it enables the development of turgor pressure or the pressure of the contents of the cell against the cell wall.
The pectin polysaccharide matrix, which is highly cross-linked, contains a matrix of cellulose microfibrils and cross-linking glycans that make up the cell wall. Lignin may accumulate in secondary cell walls. Therefore, option C is correct.
Learn more about cell walls, here:
https://brainly.com/question/965751
#SPJ6
What are three reasons Carbon is an important molecule for living organisms?
Need help on this *URGENT*
How is carbon recycled in photosynthesis and cellular respiration ?
Can someone answer this for me?
Answer:
Outside
Explanation:
The word outside makes the most sense in this sentence.
Hope it helps!
why are there 2 hydrogen atoms and only one oxygen
Answer:
Oxygen is an electronegative
Explanation:
Not only is it because in the chemical equation for water there is 2 hydrogen atoms and 1 oxygen atom, but they also share their electrons to fill their outermost levels and that are attracted together.
Hope this helps!!
In this food web, birds would be classified as
A)
carnivores.
B)
decomposers.
herbivores.
D)
omnivores.
Answer:
D) omnivores.
Explanation:
The bird consumes both plants and arthropods
Answer:
omnivores
Explanation:
omnivorous consumers. they eat other animals like snails and worms but they also eat berries.
How do living organisms return carbon to the atmosphere in the carbon cycle
Answer:
Carbon enters the atmosphere as carbon dioxide from respiration and combustion. Carbon dioxide is absorbed by producers to make glucose in photosynthesis
Living organisms return carbon to the atmosphere in the carbon cycle by two process namely respiration and combustion. Carbon dioxide is absorbed by producers to make glucose in photosynthesis.
What is photosynthesis?
A photosynthesis is a biochemical process which occurs in plants, algae, and bacteria, when they are exposed to sunlight. During photosynthesis, water and carbon dioxide join to form sugars and give off oxygen.
Respiration is defined as the inhaling of oxygen and the exhaling of carbon dioxide and combustion is defined as the process in which a substance burns in the presence of Oxygen, produce off heat and light in the process.
For more information regarding carbon cycle, visit:
https://brainly.com/question/10861032
##SPJ2
HELP ME WITH THIS PLEASE I REALLY NEED HELP I WILL GIVE U BRAINLY IF U GET IT RIGHT !!
what are the pros and cons of online school
Answer:
The Pros and Cons of Studying Online
Pro: Increased Flexibility. The biggest advantage to studying online is the increase in flexibility. ...
Con: Reputation. Many firms and institutions are quick to dismiss an online education. ...
Pro: Ease of Access. ...
Con: Lack of Social Interaction. ...
Pro: More Affordable. ...
Con: Fewer Courses.
Pros of Online Schools:
Time flexibility.
Availability.
24/7 access to course material..
Location flexibility.
Zero commute.
Self-Direction.
Multi-media presentations.
Variety of course options.
Cons of Online Schools:
Limited interaction with instructor.
Technology requirements.
Social interaction.
Campus environment.
Time management.
Stigma.
Credit transfer.
Financial aid.
Have a wonderful day!
Which organisms are producers?
A.cactus and insect
B.cactus and lizard
C.cactus and sage bush
D.sage bush and lizard