One atom of carbon a. has four electron shells b. can bond with up to four other atoms c. forms a special shape called a tetrahedron d. is part of all inorganic compounds

B.can bond with up to four other atoms

Explanation:

One atom of Carbon, as you know the Atomic number of Carbon is 6, this means that in the second orbit it has 4 electrons which are free to bond with any element that they want, so as the atomic number is 6, that means it has 6 electron shells, and we know that carbon form organic compounds, and tetrahedron is the shape that carbon takes when its mixed with other 4 atoms, so the answer would be B.can bond with up to four other atoms.

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.