A mouse sees a hawk fly overhead. The mouse then runs into the nearest hole in the ground. What is the hawk flying overhead in this scenario?

A) a stimulus

B) a response

C) a developmental change

D) a unicellular organism

What type of symmetry is associated with diploblastic organisms? Which phylum is the exception to this rule and why?

Which of the following best represents a simple food chain? A. Producer - secondary consumer primary consumer B. Primary consumer - secondary consumer → producer C. Secondary consumer → primary consumer → producer D.

1. What will happen when two plants are introduced?

Which in an area located within the alpine tundra

The Ojibwe Indians, in the Minnesota and Great Lakes regions, did not consider themselves "owners" of the lands they lived on, but rather felt that the land would provide them with the necessities of life if they cared for it.

Air pollution is caused by A. natural events and human activities. B. human activities but not natural events. C. heavy rainfall. D. the sun.

Which of the following can increase the growth of algae when it enters streams? A) insecticide B) herbicide C) carbon dioxide D) oil

Which are the best examples of types of molecules used for energy storage by organisms? Choose all answers that are correct. A. lipids B. proteins C. nucleic acids D. carbohydrates

Tell me five different invasive species

How much energy is produced by each type of macromolecule