Answer: Option B.
Absorb ultraviolet Ray's from the sun.
Explanation:
Ozone layer is the lower part of the stratosphere that absorb the ultraviolet rays of the sun. It is made up of three oxygen (O3). It is about 20 to 30 kilometers from the Earth. The ozone layer is of utmost important because it absorb the ultraviolet Ray's from the sun which can damage plants and animals. The ultraviolet rays can cause Mutation of the DNA thereby leading to death of plants and animals.
Cells send out signals when they're in distress.
The Sun (an abiotic factor) provides energy for producers ( a biotic factor) which use light energy to undergo the process of photosynthesis. When other consumers eat the producers they are receiving energy as well.
Answer: A. plants
Explanation: plants begin the food chain because it is a producer, which doesn't eat other animals to get energy.
DNA is going to be the answer
