The answer you're looking for is Exoskeleton
B. The hole in the ozone layer over Antarctica got bigger.
Explanation:
Using the bar scale in the map, we can vividly see that the hole in the ozone layer over Antarctica got bigger. The reduction in the intensity of the blue color in the 2015 suggests that there has been an appreciable decrease in the ozone cover over Antarctica.
- Ozone layer is in the stratosphere and it prevents harmful ultraviolet rays from reaching the earth surface.
- Over the the years, the increasing use of chlorofluorocarbons in aerosols, as refrigerants have led to a surge in the depletion of this layer.
- From the imagery shown on the map, in 2006, we can vividly see a very thick blue cover over Antarctica.
- In 2015, the cover is gone.
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Lichens are widely used as environmental indicators or bio-indicators. If air is very badly polluted with sulphur dioxide there may be no lichens present, just green algae may be found. Therefore the answer is the air quality is good because of no lichens present
The correct answer is B. He himself wrote the 20-page paper.
Explanation:
Pronouns such as himself, yourself, themselves, or myself, which are known as intensive pronouns, are used to emphasize the subject of a sentence, usually by placing the pronoun right the subject or main pronoun. This can be seen in the sentence "He himself wrote the 20-page paper" because the pronoun "himself" emphasizes the action "wrote" performed by "he", which is the main subject of the sentence. According to this, it is in the second sentence a pronoun creates emphasis.
During cellular respiration the cell uses oxygen to break down sugar. ... When the cell uses oxygen to break down sugar, oxygen is used, carbon dioxide is produced, and energy is released.
