ANSWER:
I think it's the second one.
EXPLANATION:
in primary succession newly exposed or newly formed rock is colonized by living things for the first time. in secondary succession an area that was previously occupied by living things is disturbed, then recolonizeed following the disturbance.
Answer:
Due to sexual reproduction and genetic variation, all apple trees of the same variety are clones from one tree. All apples of different kinds in the world are from one single tree
Explanation:
if your asking about how the different apples came from then this is your answer
The average adult needs 1,000 mg of calcium per day in the body.
<h3>What is Calcium?</h3>
This is a chemical element with the symbol Ca and atomic number 20. It is involved in the strengthening of bones and teeth in the body so as to reduce risk of fracture.
Average adults require 1,000 mg of calcium per day for optimal functioning of body cells.
Read more about Calcium here brainly.com/question/103896
It should be c at school we worked on this not to hard nor easy
