Which of the following statements about weathering is true?
a. Physical and chemical are the two types of weathering.
b. Weathering occurs when rocks are subjected to the movement of wind or water.
Humans are the only cause of weathering.
d. Movement is required for weathering to take place.

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required

Answers to mastering biology drag the labels to their appropriate locations to complete the punnett squares for morgan's reciprocal cross. drag blue labels onto the blue targets to indicate the genotypes of the parents and offspring. drag pink labels onto the pink targets to indicate the genetic makeup of the gametes (sperm and egg). labels can be used once, more than once, or not at all. hints

Which of these structures are found in both plant ans animal cells?