Sand blowing against a rock is an example of erosion
physical weathering
chemical weathering

Biomass can be used to generate electricity. biomass relies heavily on agricultural crops. plants release carbon dioxide and water in combustion. plants use photosynthesis to originally generate the energy that is needed. the chemical energy of these plants all started with what energy source?

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

26 a medida que cambia el clima, ¿qué tipo de reproducción más probablemente de a una especie mayores posibilidades de supervivencia?