Answer:
Because when ice is made it traps air bubbles inside and that causes the ice to float.
Answer: The average global temperature has increased by a little more than 1°. The temperatures we experience locally and in short periods can fluctuate. In the past, a one- to two-degree drop was all it took to plunge the Earth into the Little Ice Age. The strong warming trend of the past four decades likely reflects a shift
Explanation: hope i helped
Answer:
Whenever matter moves from one sphere into another, some process, driven by energy, causes it to happen. Here are some examples: Water moves from a river (hydrosphere) into the air (atmosphere) by a process called evaporation.
Explanation:
The answer is <span>Without genetic diversity, natural selection cannot occur.
</span>In natural selection, genotype variations that will increase the chance of survival and reproduction of some organism are preserved and will be inherited. In order for natural selection to occur, the genetic diversity must be present within the population. That way, natural selection will have more "choices" so it can favor those variations t<span>hat will increase the chance of survival and reproduction.</span>
Stem cell lookup presents remarkable promise for understanding basic mechanisms of human improvement and differentiation, as properly as the hope for new redress for illnesses such as diabetes, spinal cord injury, Parkinson’s disease, and myocardial infarction. However, human stem cell (hSC) research additionally raises sharp moral and political controversies. The derivation of pluripotent stem cell strains from oocytes and embryos is fraught with disputes about the onset of human personhood. The reprogramming of somatic cells to produce brought on pluripotent stem cells avoids the moral issues particular to embryonic stem cell research. In any hSC research, however, dilemmas arise involving sensitive downstream research, consent to donate materials for hSC research, early medical trials of hSC therapies, and oversight of hSC research. These moral and policy issues want to be discussed along with scientific challenges to make certain that stem mobile lookup is carried out in an ethically fabulous manner. This article affords a crucial evaluation of these issues and how they are addressed in contemporary policies.
Stem cells are the body's uncooked substances — cells from which all other cells with specialized functions are generated. Under the right prerequisites in the body or a laboratory, stem cells divide to shape more cells known as daughter cells.
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