Scientists think that chimpanzees and gorillas share a common ancestor. Today, it is not possible for a chimpanzee and gorilla to mate and produce fertile offspring.What is this an example of?
A.succession
B.natural selection
C.spontaneous generation
D.speciation
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Answer 1
Answer:
D. speciation. The common ancestor of gorillas and chimpanzees evolved into two distinct species through the process of speciation. Separate species cannot successfully produce fertile offspring.
Water molecules can pass into a cell, while larger molecules cannot. Which feature of a cell allows this to be true?
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The selective permeability of a cells membrane determine what size and type of molecules can enter or not. If a molecule has a charge and the membrane has a neutral charge the molecule has a harder time diffusing through. The differences in charge affect permeability through a cell membrane.
The cell has a semi-permeable membrane that allows water molecules to pass in a cell while larger molecules cannot. Lipid bilayer is an example of a biological semi-permeable membrane. The diffusion of water is called osmosis. Solutes such as salt and other contaminants are filtered.
What is a flower part that elevates the stigma
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The part of the flower that elevates the stigma is called the style. It is located in the middle part of the flower and is designed to elevate the stigma of the flower to increase the chance of the pollen to land on it. In some other cases, the style also elevates the stigma farther from the ovary of the flower to avoid contamination. All the parts of the flower either big or small is equally important for reproduction and for their sustainability.
Humans affect the carbon cycle in many ways through the use of fossil fuels, clear cutting of forests, and controlled burns. Which of the following processes can help counteract these human interactions
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Assuming that this is referring to the same list of options that was posted before with this question, the best option from the list is that laws can be made to slow the process.
If the water concentration inside the cell is higher than the water concentration outside the cell, then the inside of the cell is ________ compared to the outside.
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Inside of the cell is HYPERTONIC as compared to the outside
What is the outermost layer of cells
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the outer layer of a cell is called epidermis.
Bacteria are named primarily on the basis of their _____.