Polyploidy instantly results in a new plant species because it
a. changes a species’ number of chromosomes.
b. produces a hardier species.
c. causes mutations.
d. all of the above

Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. makes predictions

What are some natural processes that represent physical and chemical changes?

Grasses--> mice--> cats--> coyotes suppose 10,000 units of energy are available at the level of the grasses. what is the total number of energy units lost by the time energy reaches the coyote?