What are the spiral arms of the Milky Way made of? A. Older stars and comets B. Variable stars C. Younger stars and gaseous nebulae D. Asteroids and comets

Which of these stages is NOT part of interphase? G1 M G2 S

Many food chains connecting with many paths for the flow of energy is also known as a A food web B ecosystem C environment D population

When working with materials during a scientific investigation it is important to understand the meaning of common safety symbols. True False

In an experimental investigation the group that is not manipulated by the researcher and is then compared to the experimental group is called the blank group? fill in the blank.

Describe DNA's important genetic role in a few sentences below.

21. Which step in cellular respiration occurs outside of the inner membrane space of the cell mitochondria? a. Krebs Cycle c. Transition Reaction b. Citric Acid Cycle d. Phosphorylation Reaction

Selectively cutting down trees on an area of land can be best described as?

Particles are displaced perpendicular to motion (up and down) in which kind of wave? Transverse Or Longitudinal

Which of the following is a cost of mining aluminum from new bauxite deposits

Which atoms are in all carbohydrates? Carbon, Iron, Oxygen Carbon, Hydrogen, Oxygen Carbon, Hydrogen, Nitrogen Nitrogen, Phosphorus, Oxygen