Answer:
A solid rock becomes soil when it breaks down and combines with water, air, and organic matter. The correct answer would be #3
Explanation:
These plants colonize habitats, and exclude the native plants and animals. Since they decrease native biodiversity, they arebad for the environment.
The tiny filtering units in the kidney are the nephrons
Answer:
Hi, Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
