The tundra is home to permafrost.
Answer:
A.
Explanation:
Sperm migrate from the seminiferous tubules to the epididymis.
The Rna polymerase binds to a promoter on the dna molecule. A promoter is a specific dna sequence where transcription is initialized.
As in a unusual life form? well we have to stop it because it would interrupt our air voltage<span />
Explanation:
destroys the habitat.
kills off the inhabitants (animals and plants)