What are possible effects of long-term environmental changes? Check all that apply.

1. adaptation

2. extinction

3. migration

4. speciation

5. starvation

Answer these questions based on what you learned from the passage. You can assume anybody's structure comes from a human.

American scientist, Linus Pauling, was one of many scientists racing to discover the molecular structure of DNA. Pauling initially thought that the molecule was a triple helix.

A truck carrying petroleum collided with a tree and has been leaking gas since the collision. Ecologists suggest the use of microorganisms to prevent soil pollution due to the leakage. Which method are the ecologists suggesting should be used?

Explain which type of succession occurs most often and why.

Little Jimmy drank 4 different energy drinks and water. After each drink he timed himself running the 50 yard dash. The water in this experiment is * - the independent variable - the dependent variable - a control - the hypothesis

Some vertebrates can go through nymph and pupa forms. True or False

Over millions of years, hominid species learned to use and create tools that became more complex over time. They eventually shaped stone into knives used for cutting, and they harnessed fire for light, heat, and cooking food.

To cause a human pandemic, the H5N1 avian flu virus would have to a. spread to primates such as chimpanzees. b. develop into a virus with a different host range. c. become capable of human-to-human transmission. d. become much more pathogenic.

Which of the following is an example of a mineral

1. Which number in a chemical formula tells you how many atoms of element you have? O A. Coefficient O B. Chemical symbol O c. Subscript O D. Capitals