Pls help!! Determine if these geological processes are responsible for changing Earth’s surface as constructive or destructive.

-Erosion of a cliff on a shoreline.

-Deposition if sediments carried by wind to form sand dunes.

- Lava cooling in the side if an erupting volcano.

- Weathering of a rock by abrasion.

If the birth rate of a population of dolphins is 2.0, the death rate is 0.5, and the population size is 100, what is this dolphin's population growth?

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

All phases of matter may have a fixed mass