D. Many nuclear accidents result in spread of radioactive material around the area. One of the most serious ones, for example, is the nuclear disaster that occured due to the 2011 tsunami in Japan.
<span>They are Carbohydrates.</span>
<span>a)
</span>The milkweed is the primary producer in the
ecosystem. It manufactures food from the abiotic factors in the soil such as
nitrates and water and those in the atmosphere such as carbon-dioxide and
sunlight. The milk weed is then fed on by the caterpillar and a primary
consumer. The caterpillar is then fed on the mocking bird (secondary consumer)
<span>b)
</span>Increased human population growth and their activities
have resulted in the emission of carbon dioxide and other greenhouse gases in
the atmosphere. This has increased the global temperature. This increase of
global temperature increase ocean temperatures causing coral bleaching.
Another example is depletion of water sources
by human activities hence causing drought. Drought reduces the amount of
vegetation growth due to scarcity of water in the soil (due to lowering of the
water table) for plant growth.
Answer:
b just go with your gut 54
Answer:
B - Some organic molecules, including amino acids, could have been produced from chemical reactions on early Earth
Explanation:
The Miller-Urey experiment was a chemical experiment that attempted to recreate the chemical conditions present on early earth, and used these conditions to try to decipher how life on earth came about.
Their experiment showed that simple organic compounds (i.e. amino acids) that represent the building blocks of complex macromolecules (i.e. proteins) could be formed from this experimental set up with the addition of energy. This showed the minimal features required to form life.