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which of the following did you include in your
answer? select all that apply.
o conclusions can't be trusted.
experiment may not be repeatable.
data may be incorrect.
data may not reflect actual situation.
data may not answer question asked.
o results may be biased.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?