I think it is d or it would be all of them apart from c
Answer:
c. It creates additional waves and currents, which help push the oil away from the habitat.
Explanation:
This rubber hose like substance in the picture provides some vibrations on the water surface. Oil is known to float on the water so it’s advisable to scoop the oily parts away from where the coral reefs are situated at.
This technique ensures that there is creation of additional waves and currents which help push the oil away from the habitat. This makes C the right choice.
Answer:
The condition of the Earth had to become favourable before it could support any form of life.
The formation of the different layers around the earth like the ozone layer was necessary before life could originate. Primitive species such as some prokaryotes were able to live in hydrothermal conditions during the initial times. With the passage of time, as the concentration of oxygen increased due to photosynthetic prokaryotes, situations became favourable for eukaryotic organisms to arise.
Answer:
fast rotation, slow revolution
Answer:
About 26 percent of adult stranded sea lions that die are diagnosed with cancer. Which is high for the population of wild animals. The research finding shows that death of a sea lion with cancer is invaluable. The research shows that sea lion pulp are expose to PCBs while in utero. This is a important health effects in the later life of sea lions,because PCBs can affect organ development.
During the research the Center collects samples from each of these patients to measure environmental exposure to carcinogens,it was discovered that most sea lions were infected with a herpesvirus similar one that causes Kaposi's sarcoma in humans.