Of the following groups which contains the greatest number of species?
crustaceans
mammals
plants
insects

Insects

Explanation:

The Arthropoda is the largest phylum in the animal kingdom because about 85 percent of all known species are arthropods, and insects alone make up about 75 percent of known species.

Arthropods are divided into the following classes:

- Crustaceans

- Insects

- Arachnids

- Myriapods

Thus, insects contains the greatest number of species

Insects.

Explanation:

Insects are largest group of invertebrates animal. They belong to phylum arthropoda and the are about 1 million or more. Insects have a pair of antenna, their body is cover with exoskeleton, they have three pairs of leg, their body is divided Into head , thorax and abdomen. Their eyes are bulged. They have pairs of wings. Examples are ants, bees, termites, flies, butterfly, grasshopper e.t.c.

enzyme speed up the reactions

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above