One of the challenges of studying life from ancient times is that not all organisms form fossils. Which of the following explains why some organisms form fossils and others don't. (Select all that apply)

a. The tracks or burrows of an organism must be filled with sediments before they are disturbed.

b. The organism must first get stuck in rock.

c. The soft tissue of the dead organism must be eaten by scavengers or decomposers before the bones can be preserved.

d. The organism's body must be covered by sediment or another substance before its body decays.

Me with these questions if you’re it sure don’t answer

Building glycogen from glucose molecules is an example of what

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.