*URGENT* A student made a model of an onion skin cell she viewed it using a microscope. The scale is 1:500. the student's cell model has a length of 15 cm.
how many centimeters is the real cell's length?

Apart of an ecosystem that can restrict the growth of a population is referred to as

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases