8  p o i n t s! which of the following is a characteristic of a scientific experiment? its results always support the hypothesis. it shows cause and effect relationships. it is performed in nature. it can be performed only once.

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

How will you manage your time to accomplish the necessary tasks both on the job and at home?

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.