Tia ran an experiment to test the effect of light on plant growth. She placed 5 plants in a dark cabinet (no light), 5 plants outside the cabinet (low light), and 5 more plants on the window sill (high light). She gave all plants equal water and kept them at room temperature. She measured plant growth every other day for 2 weeks. What Independent variable did Tia test during her experiment? A - Room temperature
B - Levels of light
C - Plant grown
D - Amount of water

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

Witch type of microscope is used to view very small cell components like proteins and dna?

Biomass can be used to generate electricity. biomass relies heavily on agricultural crops. plants release carbon dioxide and water in combustion. plants use photosynthesis to originally generate the energy that is needed. the chemical energy of these plants all started with what energy source?