The phylum Arthropoda contains a wide diversity of animals with hard exoskeletons and jointed appendages. Many familiar species belong to the phylum Arthropoda—insects, spiders, scorpions, centipedes, and millipedes on land; crabs, crayfish, shrimp, lobsters, and barnacles in water (Fig. 3.72).
The variety of all life forms on Earth.
Biogenesis, the fir tree began life when fertilization occurred to produce a singlee cell.
Answer:
A. Soil is composed of 4 components: water, eroded rock, air, and living organisms
Explanation:
