Which best defines homeostasis?

O modifying the external environment

O maintaining a stable internal environment

O controlling what enters and exits the cell

O movement of materials into the cell

Describe the nebular hypothesis of earth's origin

A population ecologist determines the number of a oak trees per square unit in a forest. what is he trying to infer by doing so?

Explain the relationship between homologous chromosomes and the relationship between sister chromatids. how are these relationships different from one another?

Agrobacterium tumefaciens is often used in the production of transgenic plants because of its Ti plasmid.

During cellular respiration, chemical energy is converted to cellulal energy.

Several tissues come together to form an what

Which best explains what happen when an election moves from an excited state to the ground state

The internal solute concentration of a plant cell is about 0.8M. To demonstrate plasmolysis, it would be necessary to suspend the cell in what solution?

In some flowers, a purple pigment is synthesized from a red precursor pigment. In the absence of all pigment, flowers are white. A pure-breeding plant with red flowers was crossed to a pure-breeding plant with white flowers.

How could decomposer ne add ed to the diagram whicb parts of the food web do they affect