What’s the central idea of this paragraph ??

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

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm