What is a hormone?

A. A new form of chemical insecticide waiting approval by the EPA
B. A strong herbicide
C. A species-specific chemical sex attractant
D. A chemical that travels in the circulatory system and controls an organism's growth and development
E. A safe, natural pesticide


Answer: D

Environmental & Atmospheric Sciences

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Describe shield volcanoes. What are they built of? Where are they found? What will be an ideal response?

Environmental & Atmospheric Sciences

Climatologist define a "dry climate" as a climate in which ________

A) precipitation is blocked by high mountains B) less than 25 cm (10 in) of rain falls in a year C) precipitation is less than expected evaporation D) All of the answers are correct.

Environmental & Atmospheric Sciences

Which of the following correctly describes membrane proteins?

A) They are suspended on the surface of the membrane. B) They are partly embedded in the bilayer. C) They pass completely through the bilayer. D) Any of the above, depending on the specific membrane protein.

Environmental & Atmospheric Sciences

The principle of isostasy refers to the vertical movement of Earth's crust in response to loading and unloading of weight, such as ice or sediment

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences