There is a small amount of weathering on mars because
(1) there is no liquid
(2) there is no atmosphere
(3) there is too much dust
(4) it is too cold

Donde se encuentra el adn nuclear en un organismo eucariota?

There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell

Which of the following is not a symptom of desertification?