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Hello Peppa Pig,
I'd say that the answer is B because you can observe how the perching birds make their nests.
Have a good day
Cells become specialised to carry out a specific role and then they become a group of tissues and the group of tissues work together become an organ and the a group of organs become 1 system
Answer: Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.
Explanation:
one of the following that is not a possible cause for the growth is B
An increase in the population of prey it feeds on.
