Which of the following statements correctly describe plasmas? choose all correct answers Plasmas have an indefinite shape and an indefinite volume

Plasmas are made up of particles that have a neutral charge

Plasmas are made up of ions, which are particles with a positive or negative charge

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!

Which of the following reasons best explains why a scientist would want to replicate gregor mendel's pea plant experiment? a. to discover new aspects of the natural world b. to test the predictions of current theories c. to explain recently observed phenomena d. to test the conclusions of prior investigations