How did bacteria make complex life on Earth possible?

By releasing oxygen into the atmosphere

B

By destroying life-inhibiting volcanoes

By evolving rapidly into multi-celled organisms

All of the above

Suppose the phloem of a seed plant is damaged and does not function properly. How will this most directly affect the plant? a) Water will be released from the leaves. b) The plant will become rigid. c) Water will not be taken up by the roots.

What is the result of a cross between one parent that is blood type AB and another parent whose blood type is O?

The Krebs cycle is also known as

What is sexual selection

What type of spatial distribution do the wolves illustrate? Is the wolf density the same in all territories of the island?

Which organ in alimentary canal starts digestion of proteins?

Why do animals in the alpine generally have higher levels of hemoglobin?

In an expirment on traffic, 20 cars are observed driving down a street in 4 hours. What rate of traffic was observed in this experiment? A. 5 Cars per hour B. 2 C. 4 Hours D. 0.2 hours per car

The condition in which the bodys internal enviroment is kept stable is called

Imagine that dna replication begins in an escherichia coli (e. coli) bacterium at a single origin and that dna polymerase synthesizes one strand of dna at a rate of 60000 bases per minute in escherichia coli (e. coli) bacteria and that e.