Plant and animal cells both have nucleus
Sea otters are a keystone species, meaning their role in their environment has a greater effect than other species. ... By maintaining healthy kelp forests, sea otters also indirectly help to reduce levels of atmospheric carbon dioxide, a prevalent greenhouse gas, as kelp absorbs and sequesters carbon
Explanation:
The ribs are a set of twelve bones which form the protective 'cage' of the thorax. They articulate with the vertebral column posteriorly, and terminate anteriorly as cartilage (known as costal cartilage). As part of the bony thorax, the ribs protect the internal thoracic organs.
Answer:
The symbol for D in Brenda's diagram most likely represent the sun.
Reason:
A represents the Universe, B represents the Solar System, C represents the Earth and D represents the Sun
The water present on the surface of mars does not exist in the free form like the water on the Earth. The water exists in the form of hydrated salts and in the saline form underground the surface of the Mars. The microscopic life forms that may develop will have use the water from the salts as this water can never freeze. The same goes for for the highly saline water that is under the ground. It doesn't freeze. This water can make it possible for the various microbes to live insulated from the cold temperatures while making the exchange of liquids possible for the cells.
