True or false: volcanic activity was more frequent in earth's past than it is today. question 3 options: true false

The transport tubes for food coming down the plants are called?

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?

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