Hi, this is my 4th biology question by today. answer only if you are !
i will mark brainliest only if you're right : )

(16)question:
what is true about the relationship of dna and chromosomes?

chromosomes manufacture the proteins that build the dna molecule.

chromosomes unwind the dna molecule so that sections can be made of genes by rna.

various nucleotide sequences of dna code for different chromosomes.

each chromosome contains a single, tightly wound dna molecule.

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of