Which substance speeds up a chemical reaction but is not used up?

amino acid

compound

catalyst

reactant

first person gets brainliest

When are two animals classified as belonging to the same species?

By the end of this phase the number of homologous chromosomes is reduced in half ... A. anaphase I B. Anaphase II C. Telophase I D. metaphase II E. Prophase I

Changes that make a species better able to live in new areas are?

Circulatory systems compensate forCirculatory systems compensate fortemperature differences between the lungs and the active tissue. the problem of communication between the nervous system and respiratory system.

The sides of the DNA molecule the rails of the ladder are composed of

When a protein is denatured, why does it lose its functionality?

This is a rotating machine that converts the kinetic energy of the wind into mechanical energy. If the mechanical energy is used directly by machinery, such as a grinding stone, the machine is usually called a windmill.

In what way are slime molds similar to kelp?

What does not exist in a supersaturated solution

When dust and ash particles from a volcanic eruption block out sunlight and reduce solar radiation, earth experiences the. This results in temporary climate cooling