What is reflex action?

In which biogeochemical cycle do symbiotic bacteria in the roots of many plants play an important role

How does change effect an ecosystem

What facts implies that humans and fish had a common ancestor?

Which of the following best describes a noncontact force? A. a force that is able to act at a distance B. a force that must be physically touching the object it acts on C. a force that always pulls objects backward D.

Muscle contraction is an example of which of the following types of work? Group of answer choices electrical concentration heat mechanical bioluminescent

Compare and contrast streams and rivers Compare and contrast ponds and lakes

Why does a cell need to replicate its DNA quickly?

What do the esophagus and the stomach have in common? A. Both contain chyme. B. Both contain partially digested food. C. Both contain waste material ready for removal. D. Both contain stored food.

Most organisms cannot live in temperatures: a: above 0°C b: above 50°C c: below 50°C

Is a flower a monocots and dicots