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Answer:
C
Explanation:
DNA and RNA are the only nucleic acids on this list
This is true. The impact of human on trees has been completely
negative. This includes deforestation which causing negative effects on the environment.
A massive scale of Earth’s forest has been cleared through deforestation. This
results to the damage of the land quality.
water is the essential element for life. about 71% of the total Earth is covered by water, mostly in the form of rivers, sea, oceans and glaciers. similarly, the water cycle defines the processes through which the water on earth remains balanced for all living and non living things. there are various stages which occurs in equilibrium, such include;
1. Evaporation
2. Transpiration
3. condensation
4. precipitation
water evaporates, turns into clouds and condense to make rain and snow and came back to earth in the form of precipitation.
however there are times when the process of water cycle gets disrupt causing famine, drought, floods, tsunami etc, which is extremely dangerous for life on Earth.
Salivary amylase
Explanation:
In the tongue, salivary amylase is the first enzyme to mix with food in the digestive tract. It is the primary enzyme of saliva. Salivary amylase is secreted from the salivary glands (mainly parotid glands) in the buccal cavity.
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