Which type of organism can produce energy from sunlight?
a: carnivore
b: heterotroph
c: omnivore
d: autotroph

Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction

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

What is the difference between a scientific hypotheses and a scientific theory?