Astudent measured the time required for a protein sample to be completely digested in the presence of an enzyme under different ph levels. at which ph are all three of the enzymes below the least effective?

a

2

b

5

c

7

d

10

There are six elements that make up most of the human body. which of the following is not one of these six elements?

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite

Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.