20 points)
A.
Neon, because it has two energy levels with eight electrons in the second level
B.
Chlorine, because it has three energy levels with seven electrons in the third level
C.
Gallium, because it has four energy levels with three electrons in the fourth level
D.
Tin, because it has five energy levels with four electrons in the fifth level

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

Explain why biological control methods are generally environmentally superior to chemical pest control methods.