Which best describes why viruses do not have special structures or enzymes that allow them to make their own food

What are whole organisms?

Which condition would result in the least evolution as a result of gene flow? a. Very different allele frequencies in different subpopulations b. A great dispersal distance between birth and mating c.

Over the past 200 years the level of carbon dioxide in the atmosphere has A. Decreased slightly B. increased until recently, then decreased C. Increased steadily D. Stayed aboutbthe same

What is 123,000,000,000,000,000,000,000in light years

Releasing hormones originate in which part of the brain

An organism that has the same genes as the organism it was produced from

Which of the following would be the most immediate result of a gene mutation in an organism? A. A change in a protein produced by the organism B. Increased reproductive success of the organism C. Shortened life span of the organism D.

Which of the following can be used to measure the rate of photosynthesis? A. light intensity (%) B. oxygen production (mL/hr) C. temperature D. CO2 level

All northern elephant seals come from a very small genetic pool. This is because in the 1890s a large number of them were very quickly killed until their population size was reduced to only about 20 individuals.

What are some personal thoughts on air pollution.