Answer:
c lower oxygen levels
Explanation:
the higher up the person is the closer to the atmosphere so there is less oxygen
D Pastureland - Grazing Livestock
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).
They can use those recently discovered genes and insert them in another species (fruits and vegetables) using genetic ingeniery technics so they can speed up the cell division on them, and accordingly increase the production.
The answer for this is A,
