why africa is very poor continent though it is very rich in natural resource?
Answer: Africa is poor because of lack of commitment to good governance
Explanation:
look at pic and answer please
Answer:
Chemical change
Explanation:
Answer:
chemical
Explanation:
a human cell contains a very limited number of genes?
Answer:
False
Explanation:
Darwin met with many farmers who bred animals and plants to enhance
them form farming. this led Darwin to come up with what idea?
A.Natural selection
B.Artificial selection
C.Survival of the fittest
D.Use and disuse
Answer:
I think Its natural selection because its when they produce more offspriing. Hope this helps lol :)
Explanation:
What part of the rotifer is responsible for crushing food?
I said foot but I might be wrong. Help, anyone?
Answer:
Rotifers are specialists at living in habitats where water dries up regularly.
The Monogononta, which have males, produce fertilised 'resting eggs' which can resist desiccation (drought) for long periods.[11]
The Bdelloids, who have no males, contract into an inert form and lose almost all body water, a process known as cryptobiosis. Bdelloids can also survive the dry state for long periods: the longest well-documented dormancy is nine years. After they have dried, they may be revived by adding water. In this, and several other ways, they are a unique group of animals.[12]
Explanation:
The front has a ring of cilia circling the mouth. This gave the rotifers their old name of "wheel animalules". There is a protective lorica round its body, and a foot. Inside the lorica are the usual organs in miniturised form: a brain, an eye-spot, jaws, stomach, kidneys, urinary bladder.
Rotifers have a number of unusual features. Biologists suppose that these peculiarities are adaptations to their small size and the transient (fast changing) nature of its habitats.
Answer:
Trophi (got it right on my quiz)
Explanation:
The trophi located behind the rotifer's mouth are responsible for crushing food.
PLEASE ANSWER QUICKLY! WILL GIVE BRAINLIEST
The chart shows information about four ecosystems. Based on the information in the chart,
which
ecosystem most likely has the highest biodiversity?
A. W
B. X
C. Y
D. Z
Answer:
answer is B) x
Explanation:
i just took the quiz on edge
The chart shows information regarding the four ecosystems that has the highest biodiversity. As per the table ecosystem, X has the highest diversity. Hence option B is correct.
What is an ecosystem?An exosystem is the system of ecological interaction of different environments and can be on land and in water. The system is dynamic and thus offers a wide range of species.
The ecosystem is thus a biodiversity hotspot and as per the table, the ecosystem X gets more of the high temperature and has s size square of 100 miles.
Find out more information about biodiversity.
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a strong but flexible barrier between the cell and its surroundings?
cell membrane
cell wall
cytoplasm
chloroplst
How many membranes cover the Golgi apparatus?
Answer:
The Golgi apparatus (GA), also called Golgi body or Golgi complex and found universally in both plant and animal cells, is typically comprised of a series of five to eight cup-shaped, membrane-covered sacs called cisternae that look something like a stack of deflated balloons.
Explanation:
The Golgi apparatus is a series of membranes shaped like pancakes. The single membrane is similar to the cell membrane in that it has two layers. The membrane surrounds an area of fluid where the complex molecules (proteins, sugars, enzymes) are stored and changed.
Answer:
3 to 8 membranes called cisternae
there are more hydrogen atoms in living organisms than any other atom, but oxygen is more abundant in terms of mass.
why is this statement true?
Answer:
They are compounds made of the same two elements, but each contain different numbers of atoms. ... There are more hydrogen atoms in living organisms than any other atom, but oxygen is more abundant in terms of mass. Why is this statement true? Hydrogen atoms have a lower mass than oxygen atoms.
Answer:
The statement is true because there is more of the actual atom hydrogen in living organisms, as oxygen is more abundant in the world, but not in every living organism.
Explanation:
For example, there is more hydrogen in living organisms added up, but there is more oxygen in the world. If you add them all up, the mass of oxygen would be more then hydrgen, but more hydrogen in actual living organisms.
which is a biotic limiting factor that would influence the growth of a deer population?
A. amount of plant growth
B. high temperatures
C. amount of monthly rainfall
D. a Forest fire
Answer:
The answer would be "A"
Explanation:
A biotic limiting factor includes things like food, availability of mates, disease, and predators. Deer being herbivores, their food supply would be determined by plant growth.
Have a blessed day! Please mark brainliest if correct! :D
Number of plants is a biotic limiting factor that would influence the growth of a deer population. Temperature, rainfall, and forest fire are the abiotic factors which influence the population growth. Thus, the correct option is A.
What is Population growth?
Population growth is the increase in the number of organisms on Earth. For most of the organisms, population size was relatively stable. But with the change in the factors such as biotic factors and abiotic factors such as energy, food, water became more available and reliable.
The change in population size depends upon four main factors which are fertility rates, mortality rates, the initial age profile of the population and migration.
Therefore, the correct option is A.
Learn more about Population here:
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the sun is the ______ source of energy for hetertrophs
Answer:
main (let me know if I am wrong but that seems right) can I get brainliest please? (rate 5 stars please)
Explanation:
Put the levels of organization of an ecosystem in order from smallest (1) to largest (4).
community
ecosystem
organism
population
Helping who needs it-edge 2021
Answer:
sdasdasd
Explanation:
Answer:
Organism
Population
Community
Ecosystem
Explanation:
Select the correct answer from each drop-down menu.
Augustine is writing an essay on stem cells. Help him by completing the sentences.
Stem cells have the ability to divide
and produce unspecified cells. They can be developed into a required tissue because of their ability of
.
Answer:
Stem cells have the ability to divide through mitosis and produce unspecified cells. Stem cells can be developed into a required tissue because of their ability of differentiation.
Explanation:
A stem cell is a cell that is in an undifferentiated state. This means that it has not specialized in a specific type that carries out a specific function of that tissue, which does not imply that stem cells do not have their own function. The concept of stem cell is due to the ability to originate specialized cells from one or more tissues, depending on the degree of potency or plasticity it has. They are found in all multicellular living organisms. Their main characteristic is that by reproducing through the process of mitosis (they divide into two cells) they can form more stem cells or differentiate, that is, they become specialized cells, in such a way that they are essential for the renewal of cells in different tissues. and to repair them.
Stem cells have the ability to divide through mitosis and produce unspecified cells. They can be developed into a required tissue because of their ability of differentiation.
Stem cells are a special type of cell that may develop into a variety of specialized cells inside the body. They have the ability to differentiate into more specialized cells through the process of mitotic activity (mitosis) and perform restorative and regenerative roles.
Stem cells have significant and potential treatment for a variety of diseases due to their capacity to repair, regenerate, and grow into certain specialized cell types.
For example, bone marrow transplantation for people suffering with sickle cell disease.
Learn more about stem cells here:
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Two things that are common to all cells are:
O A nucleus and a cell membrane
O A nucleus and mitochondria
O A cell wall and a nucleus
O A cell membrane and cytoplasm
O A nucleolus and chloroplasts
Answer:
A nucleus and a cell membrane.
Explanation:
Other organisms were another factor. What kinds of changes in other populations of organisms could be affecting the moths?
The presence of the industrial revolution caused moths to evolve, as different colored moths became dominant in certain phases of climatic changes, such as the black moth, which gained advantage during the industrial revolution.
What is the significance of the evolution of moths?In moths, evolution occurred as a result of changes in climatic conditions, such as before the Industrial Revolution, when the environment was clean, giving light-colored moths an advantage over the predator-favored black moth. The environment became darker after the industrial revolution as a result of smoke, which favored dark moths.
Hence, the presence of the industrial revolution caused moths to evolve, as different colored moths became dominant in certain phases of climatic changes, such as the black moth, which gained advantage during the industrial revolution.
Learn more about the evolution of moths here.
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Why do you think mapping the bedbug genome may help scientists control pests?
Explanation:
When mapping the genome, it shows where other pests are more likely to appear. This means more control over the rate of pest growth, and they can stop reproduction from increasing.
Understanding the genome will enable scientists to know what traits the bug has and whether they have any resistance to insecticides. The bugs may have natural resistance to certain insecticides, but not to others. This research may help scientists develop effective insecticides.
Why does the starch need to be digested?
Answer:
starch molecule is too big to fit in the cell, and when starch breaks it turns into glucose, which your body can burn it for energy.
Explanation:
Given that the tundra is very dry most of the year, why don't plants that live on the tundra have deep roots to search for water?
Explanation:
plants that are shorter and need little to no soil are most efficient. Lichens, which are part fungus and usually part algae, don't need extensive root or water-transportation system
what will happen to us if our body temperature fluctuate
Answer:
If the body temperature is too low, the enzymes in the body become inactive so many metabolic reactions cannot happen effectively, our metabolic rate will be affected, we may suffer from hypothermia.
If the temperature is higher than 37degree celsius, we will have a fever. But this actually allows enzymes to work at their optimum temperature, which speeds up the metabolic reactions in the body and is good for us.
Pls help due in 5 minutes WILL MARK BRAINLIEST
1. Suppose a town wants to buy a polluted marsh on an abandoned factory's land, clean up the marsh, and use the area as a nature center for the town. What are two costs and two benefits of the town's proposal?
Answer:
The correct answer is given below:
Explanation:
If a town wants to buy a polluted marsh region on a factor's land that is abandoned and clean up the marsh and use the particular area as a nature center for the town there would be some costs and benefits of this which are:
Costs of the proposal:
Such a plan requires economic support as it costs a huge amount of money, how the town will get the money for this?
Some taxpayers may raise the question of how the town can use their money for a plan that requires money for cleaning.
Benefits:
Nature centers can help for education purposes for pollution its effect and how to control it. It also leads to tourism and jobs.
Nature and animals will be benefited too
how does the brightness/luminosity change throughout the cycle of a massive star?
Answer:As the size of a star increases, luminosity increases. If you think about it, a larger star has more surface area. That increased surface area allows more light and energy to be given off. Temperature also affects a star's luminosity.
Explanation:
Answer:
Brightness-Luminosity Relationship:
At a particular Luminosity, the more distant an object is, the fainter its apparent brightness becomes as the square of the distance
Explanation:
The leukocyte (a white blood cell) is part of the immune system. Is it smaller or larger than the pathogens?
Answer:
I think its smaller!
Explanation:
Hope this helps!!!
Have a great day!!!<3
HELP PLEASE ASAP IM REALLY BAD AT SCIENCE
Answer:
2. All light does share the same wavelength.
3. I would say mostly red and orange(two last one).
You identify two different fish that you suspect are two different species. Design an experiment to test whether or not these fish are two different species AND how they became two different species. Be sure to explain how the results of your experiment would support your conclusion.
Answer: First, I would lay Out Both Fish, Identify ALL Differences - And Similarities Between Both Fish, Colors... Skin Material. Then Do as Much Re-Search Online. Find all Details About the Fish, Including They're Environments. (This came From My Mind... Hope its Right)
Explanation: Mark Brainlist Pleasee
Answer: I would first take samples of each fish to visually compare physical traits. Assuming this could be a type of speciation, I would research the differences within their shared environment such as food sources, habitat locations, mating rituals, and foraging preferences. Online I would research histories for reproductive isolation, monophyletic groupings, and the absence of allopatric divergence. To prove my theories, I would take several local random samples of the same two species and collect all types of shared trait data. Based on the data gathered, I would determine whether it was likely that they are related.
Explanation:
Sex cells divide to produce ___________________(sperm or egg).
Answer:
Egg
Explanation:
I think it a true answer
Answer:
Sperm in males and eggs in females.
Explanation:
Sex cells divide to produce both the sperm in males, eggs in females.
URGENT!!!
Subdivision of the PNS that controls voluntary activities such as the activation of skeletal muscles.
A. Autonomic Nervous system
B. Central Nervous System
C. Peripheral Nervous System
D. Somatic Nervous System
Answer:
Peripheral nervous systemThe peripheral nervous system (PNS) is divided into the somatic nervous system and the autonomic nervous system. The somatic nervous system (SoNS) is the part of the peripheral nervous system associated with the voluntary control of body movements via skeletal muscles.
Which phrase is not an example of intercellular communication?
1. chemical signal from pituitary gland to adrenal gland
2. electrical signals pass between heart cells
3. chemical messengers dock onto receptors of adrenal gland
4. a vesicle encloses over a nutrient molecule
Answer:
1.
Explanation:
A signal from one gland to another would not be intercellular, as "inter" means inside. This means intercellular would stand for "Inside the Cell"
Please help!
In four o'clock flowers, red petals express incomplete dominance over white flowers. Which of the following pictures represents a cross between two pink flowers?
Click on the picture of the flowers until you see the correct answer.
Answer:
I know the first and second picture is wrong, not sure what the right one is. Hope this helps some
Answer:
i believe the third pic is correct :)
Explanation:
ATP and ADP both play a role in cellular reactions involving energy. How are these two molecules related
Explanation:
If a cell needs to spend energy to accomplish a task, the ATP molecule splits off one of its three phosphates, becoming ADP (Adenosine di-phosphate) + phosphate. The energy holding that phosphate molecule is now released and available to do work for the cell. ... When it's run down, it's ADP.
ATP is converted into ADP and ADP can be changed back to ATP by the addition of a phosphate group.
