Photosynthesis is important to living organisms because it is
a. the foundation of most food chains.
b. the source of nitrogen gas in the air.
c. how animals get carbon dioxide to breathe.
d. the process that occurs in most ecosystems.

Photosynthesis is important to living organism as it is the foundation of most of the food chains.

Further Explanation:

Food chain is a linear advancing process from producers to the last/apex or tertiary consumers. This chain starts from producers which are the organisms such as plants. Plants undergo photosynthesis and produce simple carbohydrates which are the source of energy for every organism which is directly or indirectly dependent on them.

Let us consider an example of linear food chain,

Lion feeds on deer and deer consumes grass for nutrition.

In the above given example grass is the producer and is the base of a food chain or we can say a starting point of a food chain. While the deer is a primary consumer a herbivore which is directly dependent on grass for food. The lion consumes the deer for nutrition and is a apex carnivore for the given example. The lion is indirectly dependent on the producer that is grass for nutrition.

Therefore the photosynthesizing plants play a vital role in the continuity of life as the energy entrapped by them is passed through all the trophic levels.

The producers (plants) thus; are the base or foundation of most of the food chains and play a vital role for living processes and organisms.

Learn more:

1.Learn more about biotic

2.Learn more about scientific processes

3.Learn more about process used by the plants to remove carbon from atmosphere

Answer Details:

Grade: High School

Subject: Biology

Chapter: Ecology

Keywords:

Photosynthesis, food chain, carbohydrates, producers, consumers, carnivore, herbivore, nutrition, continuity of life, life, plants, grass, carbon dioxide, ecosystems.

uh two lol

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.