HELP PLEASE Human bones have both strength and a limited amount of flexibility. Their strength helps bones to perform which function?
a. produce blood cells

b. circulate oxygen

с. absorb calcium

d. provide support

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .

What element is able to combine with itself and hydrogen to form large molecules ?