PLZ ANSWER ILL GIVE BRAINLIST IF CORRECT Which letter represents the common ancestor with four limbs, a bony skeleton and vertebrae?

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

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?

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry