Primary and secondary air pollutants can co-exist in the atmosphere.

a. True

b. False

What the anaerobic prokaryotes use to obtain energy

Which of the following is not an example of a service provided by beneficial bacteria? A. Nutrient cycling B. Food production C. Bioremediation D. Bioaccumulation

Which statement best contrasts animals with other living things? A. Animals have muscle tissue, whereas other living things do not. B. Animals have multiple cells, whereas other living things are single-celled. C.

Why were the results with just water so much different than the trials with the detergent?

What is the unit of structure in the body? The Chromosome The Cell Both 1 and 2

Which sentence correctly uses a pronoun in the nominative case as a subject? a. Stefani and me stretch for thirty minutes prior to our vaulting competition. b. Prior to our vaulting competition, Stefani and I stretch for thirty minutes. c.

Why can the same earthquake have different ratings on the Richter Scale and the Moment Magnitude Scale?

Which of the statements best describes the process of crossing over during meiosis? Haploid daughter cells trade chromosomes in pairs. Homologous chromosomes pair up and exchange segments of DNA.

A marine clam is mistakenly added to a freshwater aquarium. What will happen to the clam and why? Popcorn sold at movie theaters is very salty, causing people to become thirsty and to buy so drinks. Explain why salty popcorn causes this thirst.

What is the function of reproductive system?