Why do phytoplankton have projections and form long chains?

a. to catch more food

b. to respire oxygen more efficiently

c. to keep from sinking and to capture more light

d. to use as protection against predators

Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land