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Which of the following combination of organelles are only found in plant cells?  

The figure shows a food web. In this web, there are ____ producers.

When the number of births exceeds the number of deaths, this results in

There are two colors in these types of hamsters, brown and golden. According to this diagram, a brown male is crossed with a golden female; all of the offspring are brown. Which of the following describes the allele for the color “golden”?

Aa is___ while AA and aa are ___.

If the growth rate increases, the doubling time

Which movement of substances through a cell membrane against a concentration gradient requires energy?  

The primary consumers that feed directly on green plants are called

The two reactions shown below represent processes that occur in living organisms. Which of the following statements is correct about the two reactions?  

The yucca moth is the only pollinator of the yucca plant and the plant cannot produce seeds without the moth carrying pollen among flowers. In return, the yucca moth lays eggs in the yucca flower and the moth larvae harvest a small proportion of the resulting seeds. Since the future fate of these two species is tied together in this fashion, this is an example of