What is the Earth's mantle? A It is the center of the Earth that is composed mostly of carbon and nickel. It is the center of the Earth that is composed mostly of carbon and nickel.

B It is the thickest part of the Earth's layers between the outer core and the Earth's crust. It is the thickest part of the Earth's layers between the outer core and the Earth's crust.

C It is located between the asthenosphere and the lithosphere. It is located between the asthenosphere and the lithosphere.

D It is the top portion of the Earth that contains the lithospheric plates.

B

Explanation:

It is the thickest part of the Earth's layers between the outer core and the Earth's crust.

sex cells are usually half's then they find another half and make a fertilize egg

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.