Robert and Susan are married and have 2 children, one son and one daughter. The children have different hair colors and eye colors. Which of the following statements explains these
differences in the children?
A) The environment affects these children before their birth
B) Hormone changes in a pregnant woman's body cause traits to develop differently in fertilized egg
C) Sexual reproduction produces fertilized egg that has a unique genetic make-up
D) There is a lack of variation in the genes of the parent's sex cells

the backbone of the dna and rna compound is sugar phosphate.

. ph changes the ability of them he enzyme to dissolve in water.

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.

carbon traps heat so more of it makes it hotter causing global warming. during the ice age carbon levels in the atmosphere were low so it got very cold. so the common things between them is carbon levels in the atmosphere.