Answer:Extra carbon dioxide in the atmosphere increases the greenhouse effect. More thermal energy is trapped by the atmosphere, causing the planet to become warmer than it would be naturally. This increase in the Earth's temperature is called global warming .
Explanation:
The T cell is a lymphocyte or type of white blood cell. They play a role in the immunity of the body. There are different varieties of T cells and they are differentiated by the receptors that are on the surface of the cells. Some cells are natural killers and some are B cells.
Answer:
The correct answer will be option-C
Explanation:
LUCA or the last universal common ancestor or the concestor represents one of the populations of the most common ancestor of all the organisms present on this Earth today.
The LUCA organisms are not considered the first form of life on earth but studies show that they spread their genes to all other organisms through horizontal transfer methods.
Recent studies by William F. Martin indicates that LUCA was anaerobic thermophilic, H₂-dependent, CO₂-fixing organisms, therefore, the correct answer is option-C.
Answer:
Natural selection is a process where organisms that are better adapted to an environment will survive and reproduce.
This means that the advantageous alleles of this variant organism are passed on to offspring. Over many generations, the process of natural selection leads to evolution occurring. Charles Darwin was a famous English naturalist.
I think the correct answer from the choices listed above is option B. <span>Unplugging a computer can result in the loss of document files especially when these files are left open and unsaved when the computer is unplugged.</span>
