Which of the following is the best example of an open system?

A) an insulated gas cylinder

B) a car engine

C) our universe

D) a greenhouse

Which namestatement are other ways to name 1 f pey y yep pyf ypf p

During meiosis, how many haploid cells (or gametes) are generated when one diploid eukaryotic cell divides? a. 1 b. 2 c. 3 d. 4

Two neurons communicate with each other through the ... The ... released at the site to initiate action potential and carry the signal through the body

What properties apply in rna but not in dna

Andrew is describing the water cycle in three steps, as shown in this simple model. Which statement belongs in the third region? a. Waterfalls from the atmosphere as rain, ice, or snow. b. Water turns to ice or snow and stays in the atmosphere. c.

As a mouse undergoes respiration, it produces lactate. This type of respiration can be classified as acidic alcoholic aerobic anaerobic

Which continent lies almost completely within the tropical zone?

Which phrase best summarizes the theory of evolution by natural selection? a. Only the strongest animals survive. b. Life must come from other life. c. Populations change over long periods of time. d.

Why are people now getting disease that were considered eradicated?

Which action could lead to foodborne illness from cross-contamination?