The earth rotates 24 hours.
The sun rotates once every 25 days
Answer:
species-(i think?)...or maybe family?
Explanation:
well, it's basic genetics. if two organisms of the same species reproduce, a new organism of that species is born. however, if two organisms of different species reproduce, the offspring will be either nonexistent or hybrid. when an offspring is created, it belongs in the same family as its parents.
Answer is Positron Emission Tomography.
Positron emission tomography (PET) is an imaging test based on nuclear medicine. In PET imaging a small amount of liquid radioactive material such as simple sugar (glucose) called fluorodeoxyglucose (FDG) is injected into the bloodstream. It is accumulated in the body and emit gamma rays which are detected by PET. Many diseases such as cancers, brain diseases and heart diseases are diagnosed by the PET imaging.
Answer: here´s why
Explanation: Underneath the frozen upper layer, the water remains in its liquid form and does not freeze. Also, oxygen is trapped beneath the layer of ice. As a result, fish and other aquatic animals find it possible to live comfortably in the frozen lakes and ponds. If water is heated, its volume gradually decreases.
