Dogs have a reduced nonfunctional digit on their paws known as a dewclaw what is this an example of?

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?

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

Select three sports that require participants to be highly fit before the beginning a: snowboarding b: skydiving c: rock climbing d: bungee jumping e: free diving f: hiking