Consider the cladogram.

mc013-1.jpg

according to the cladogram, which organisms have roundworms as a common ancestor?
mollusks and flatworms
sponges and chordates
flatworms, sponges, and cnidarians
mollusks, echinoderms, chordates, and annelids

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.