Answer:
endosymbiosis.
Explanation:
By the beginning of the 20th century, researchers thought that plastids and mitochondria could come from bacteria. These would have been ingested by primitive cells and live within them in symbiosis.
Answer:
It allows information to go from one neuron to another through neurotransmitters.
You should try to go back to land and find a cover and make a little shelter and go under it then wait it out.
I think its c. igneous rock
For a monohybrid cross, you are crossing two alleles with two alleles. in a dihybrid cross, you are crossing four alleles with four alleles.