Why are glass cylinders preferred over plastic cylinders for conducting lab experiments ? a) they are attractive and light b) they are cheap and abundant c) they are heat and chemical resistant

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph

What materials must dams have to produce electricity, and what must occur?