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Questions in biology

[Free] Generally, animals cannot digest the linkages between the glucose molecules in cellulose. How then do cattle get enough nutrients from eating grass?

[Free] Nitrogen fixation is carried out primarily by:

[Free] How are the structures of arteries, capillaries, and veins similar? How are they different?

[Free] What are the hypotheses for glowing water?

[Free] How many hormones does a girl have?

[Free] Why are frogs said to have 2 lives?

[Free] Infiltration is the process by which rainwater becomes groundwater.

[Free] How does climate affect the type of biome found in an area?

[Free] How is gravity affected by mass and radius?

[Free] What determines which stage occurs after a supernova?