Describe how human activities have affected the worlds major terrestrial freshwater and marine ecosystem

Which statement best explains why herbivores are not considered parasites? A. They do not harm the plants they eat. B. They do not live on or in the body of a host. C. They do not depend on the plants they eat for survival. D.

You discover a butterfly that has some similarity to members of the species faunis canens, but it also has a few important differences. you may have discovered a new

Humans use what to pass on desired phenotypic traits to the next generation of organisms. A) natural breeding B) selective breeding C) selective insemination D) artificial fertilization

What is a larger class of molecules

If you had to describe the order of energy flow in an ecosystem, which of the following would you choose? a) sun à bird à worm b) eagle à rabbit à grass c) sun à alga à small fish d) grass à mouse à grasshopper

The Barringer crater in Arizona contains a mineral, stishovite, only known to form under intense pressures caused by a high-speed impact. Which event most likely formed the Barringer crater?

How do vaccines prevent disease?

Enzymes function best at the blank pH level

What causes metamorphic rocks to form from existing rocks?

The number of individual organisms born into a population in a given year