<span>Our biosphere is the global sum of all ecosystems. It can also be called the zone of life on Earth, a closed (apart from solar and cosmic radiation) and self-regulating system. Geology studies the Earth, and has tendrils in all ecosystems, thus the connection to the biosphere.</span>
While observing through his microscope, Hooke saw tiny boxlike cavities, which he illustrated and described as cells. He had discovered plant cells. Hookes discovery led to the understanding of cells as the smallest units of life—the foundation of cell theory
Target cells that are known to be having specific receptor for an antigent or antibody and the main reason why all cells are not target cells for the hormones is that they act as the focus for contact by phagocyte.
C, if you look at a water wheel, water flows on the wheel, turning a rod, powering something on the inside. Dams do the same thing except the rod goes into a transformer and is more complicated.
No, heterotrophs do not covert solar energy into chemical energy. Heterotrophs are organisms, like humans, that find their own food. They can not physically make their own food because they can't use the process of photosynthesis. So, heterotrophs hunt or gather their own food.