What is the basis of natural selection?
A. a change in the appearance of a species over time
B. individuals passing on their traits to their offspring
C. unequal reproductive success
D. the accumulation of favorable traits in a population
C. unequal reproductive success
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Two of the main ingredients in plant fertilizer are phosphorus and nitrogen. These elements are required for the synthesis of __________________, respectively, in the cells of the plants
A. DNA and proteins B. proteins and complex carbohydrates C. complex carbohydrates and DNA
In which of the following locations would you be most likely to find a species of Euglena?
A. Garden soil B. Intestine of humans C. Pond D. Rumen of a dairy cow
Could we live in the absence of the greenhouse effect?
A. Yes, Earth would be healthier. B. Yes, Earth would have less harmful gases in the atmosphere. C. No, the greenhouse effect keeps are planet's temperature controlled. D. No, because we would receive too much UV radiation from the sun. E. The answer is unknown at this time.
Match the organism to the supergroup it belongs.
Plasmodium sp. A) Opisthokonta B) Amoebozoa C) Excavata D) Chromalveolata