Which level of a food chain breaks down dead organisms at every other level?

Diatoms are an example of unicellular and colonial algae. Is this true or false?

The endosymbiotic theory was supported by the scientist Carl WoeseLynn MargulisRobert Hook, who studied mitosing cells.

Which combination of units can be used to express electrical energy?

Where is the genetic information for the virus located

Target cell receptors for most water-soluble hormones are located in the:

What are three of the excretory organs of the body

10. What is a major limiting biotic factor for animal succession in each stage? A) plant species B) sunlight
C) soil minerals D) vitamins

Which kind of energy comes from sources that won't run out?

A scientist presents the findings from her latest research at a scientific conference. Several scientists in the audience question her analysis. Which of the following is the best response to the criticism? A.

A commonly used medication to treat hypothyroidism is A. glipizide. B. levothyroxine. C. metformin. D. glitazone.