Echinoderms obtain their energy from:

a.

clams and mussels

c.

sea salt

b.

the sun

d.

sea plants and algae

Give an example to prove that your society is developed more than it was before 10 years ?

Which principle do modern democracies share with ancient athens? a. all people deserve equal rights. b. there should be no taxation without representation. c. people should vote on all matters that concern them. d. people should have a voice in government.

How did ancient civilizations develope its agriculture and protect its population