Which is biotic?
a. wind
b. iron gate
c. sunlight
d. dead leaf

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Which group of algae is characterized by unicellular organisms and includes some members that would be better classified as zooflagellates? euglenophytes red algae sporozoans green algae

Organisms that successfully adapt will leave to grownone of the above