Answer: Temperature, moisture, air quality
Explanation: Environmental factors are non-living or abiotic factors that affect, dictate or limit the distribution of organisms in an environment. These factors include temperature, moisture, light intensity, salinity, degree of acidity or alkalinity, air quality, etc depending on whether the environment in question is a terrestrial or aquatic environment.
Temperature <em>which is the degree of hotness or coldness of a place</em> limits the distribution of organisms and needs to be monitored because a slight change might cause a major shift in species's equilibrium. While some organisms are able to survive only in low temperature, some can only exist in moderate temperature while some few others can survive in high temperature. An example of what a change in temperature of the environment can cause can be seen in the issue of climate change currently which is a major topic in the scientific world.
Moisture and air quality refer to the amount of water and the quality of air found in an environment respectively. Water serves as major constituent of protoplasm and an essential component of any solution. Every organism's body has an amount of water. Too much or too little of moisture in an environment will cause a discomfort or even death of the organisms living in such environment. The presence of toxic substances in the atmosphere will affect the organisms that breathe-in air from the atmosphere as well.
Hey!!!
Answer is...
Saturn
The “gas giant” planets such as Saturn, Uranus and Neptune, radiate more heat than they receive from the sun. Uranus generates only a small amount of more heat, whereas Saturn and Neptune radiate 2.3 and 2.6 times respectively the heat they get from the sun.
So answer is option D.
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<span>The offspring of a cross between parents with different true breeding traits is called a hybrid. A hybrid offspring results from the combination of two different traits and the offspring has a mixture of both. The parents have different true-breeding traits. Hybridization in genetics is very important as it increases genetic variation within species.</span><span />
Answer:
b. Only about one-half of the world's population relies on sunlight to maintain adequate vitamin D nutrition
Explanation:
Dark skin pigments slow down the synthesis of vitamin D, so black people need to spend more time in the sun to absorb enough vitamin D, so the letter A is incorrect.
Prolonged exposure to sunlight degrades the precursor of vitamin D, whereas prolonged exposure to sunlight produces vitamin D3, which acts to regulate heart function and blood pressure. With this we can conclude that the letter C is also incorrect.
Vitamin D deficiency is not caused by calcium deficiency, on the contrary, vitamin D deficiency is a cause of calcium deficiency. In addition, summer vitamin D synthesis stocks are usually not sufficient to meet summer vitamin D requirements. That is why the letter D is also incorrect.
We can conclude, then, that the correct answer is the letter B. The main source of vitamin production is through sun exposure, because type B ultraviolet rays (UVB) are able to activate the synthesis of this substance. Some foods, especially fatty fish, are sources of vitamin D, but the sun is responsible for 80 to 90% of the vitamin the body receives. It can also be produced in the laboratory and given as a supplement when there is a deficiency and for the prevention and treatment of a variety of diseases.
Because if we're simultaneously moving/manipulating two different variables it can be very hard to determine why one variable is changing and why the other is changing. While this can be done with more complicated experimental designs, it usually is the case that scientists will only manipulate one variable and not two different ones.