What model do scientist use to describe how electrons move around the nucleus?

Sedimentary rocks that are formed partially by animals and plants are called what? A. Biogenic Sedimentary rocks B. Wentworth rocks C. Chemical Sedimentary Rocks D. Clastic rocks

Question 1 Elements in the same period have the same __. valence electron electrons atomic number valence shell number Question 2 Which element has the greatest reactivity?

Summarize the Theory of Natural Selection

Explain how a particular type of stress can cause the extinction of a species.

Neurons have _ forms A) Different B) the same

What aspects of abundance do population density and population size measure, respectively?

What's an example of a multicellular producer

Are microorganisms alive and do microorganisms affect humans

Which statement best describes the process of chemiosmosis and the direct result of its occurrence? A. The choices are Hydrogen ions flow from the thylakoid down a concentration gradient through ATP synthase channels into the stroma.

Describe how human activities threaten polar bears in the arctic