Carbon dating
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Diffusion. Passive transport is a way that small molecules or ions move across the cell membrane without input of energy by the cell. ... Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration.
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Answer:
d. They are often keystone species
Explanation:
Top predators in an environment are the largest predators and sits on the top (apex) of the food chain in an ecosystem which do not have any natural predators.
As the top predators relative to its abundance has disproportionately large effect on its natural environment, they are the keystone species most of the time.
Hence option d. They are often keystone species is the right option.
Answer:
Leaves
Explanation:
Plants grow broad leaves to absorb sunlight. This is extremely helpful because this helps plants make food through photosynthesis. Roots don't absorb sunlight. They absorb water and nutrients from the soil and carry it up through the stems. The stems then transports the nutrients throughout the plant.
Replication from formation and separation of the strands
