I think its B <span>DNA sequences that code for genetic instructions attach to phosphate groups that express an organism's physical traits. </span>
Physical weathering works with mechanical forces, such as friction and impact, while chemical weathering takes place at the molecular level with the exchange of ions and cations.
Answer:
The information is not sufficient to support this asumption
Explanation:
To unequivocally determine the existence of selection acting on this trait (size), it is necessary to carry out an experiment in which the sample size should be statistically significant (N sample for each group > 50). Moreover, it is also important to include negative controls (i.e., individuals with an average size between both groups) in the experiment.
True... examples: the spine helps you stay up right which would help for structure and the skull help protect the brain which would be protection