Who wrote principles of geology and emphasized the principle of uniformitarianism? a. charles darwin b. charles lyell?

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a.precipitation b.erosion c.migration d.condensation

Nucleic acid certain protein cell membranes certain carbohydrates