Will give brainliest

after the supernova in a star’s life cycle, what else is formed in addition to a nebula?

red giant or protostar
neutron star or red giant
protostar or black hole
black hole or neutron star

Sea stars, sea urchins, sand dollars, and brittle stars are all memeber of a group, what is the common name of the group they are all in

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

Types of scientific inquiry that biologist engage in that cannot be completely controlled