Which statement best describes how a catalyst can speed up a chemical reaction?

Which layer will become saturated first when rain falls?

Name the organs of humanelemintary canal.

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only