Answer:
Genetic variation among plant populations often occurs along different climatic gradients, such as temperature and precipitation gradients.
Environmental factors are often responsible for the patterns of genetic structure observed at small spatial scales (Sacks, Brown, & Ernest, 2004).
Answer:
of diffusion
Explanation:
Molecules move down a concentration gradient without the need to use energy. This means they move from a high concentration to a low concentration. This occurs across a semi-permeable membrane, like the cell membrane, by simple diffusion.
Weathering is process in which the rock breaks down into due to physical and chemical processes. It leads to wearing and tearing in the rocks. Weathering can be of three types physical weathering, chemical weathering and biological weathering.
Thermal stress weathering or insolation weathering occurs in places where there is a large change in daily temperatures. It causes the peeling off of the outer layer of the rocks.
