Organisms living in an ecosystem depend on the ecosystem’s abiotic factors to survive. which of the following could be considered an abiotic factor? a. plants b. predators c. sunlight d. bacteria

In what for do plants utilize nitrogen? why do they need nitrogen?

How would you describe an allele that be expressed and determines an organisms appearance? a.uncapitalized b.responsive c.recessive d.dominant

When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.