Omg this is due in like 10 mins plzz help I'll mark as brainliest 1. Hunting can be to the balance of nature.

both harmful and helpful
harmful
helpful

2.Some are both primary consumers and secondary consumers.

sheep
bacteria
birds

3. Photosynthesis can be by air pollution.

slowed or stopped
helped
increased

Recombinant dna is the merging of dna from unrelated organisms to create new genetic varieties is assembled in the lab from mononucleotides was part of the green revolution of the 1960s is pollination of one plant by another of the same species is cross-pollination of one plant by a different species