Primary producers are organisms that can make their own food from inorganic molecules. Grass is a primary producer because it can use sunlight, water, and carbon dioxide to make glucose.

Primary consumers are organisms that eat primary producers. Deer are primary consumers because they eat grass.

Secondary consumers are organisms that eat primary consumers. Lions are secondary consumers because they eat deer.

Tertiary consumers are organisms that eat secondary consumers. There are no tertiary consumers in the food web described in this question.

Decomposers are not assigned a trophic level because they do not consume other organisms. They obtain their energy from breaking down dead organic matter.

Producers are organisms that can make their own food from inorganic molecules. They are the foundation of all food webs.

Consumers are organisms that cannot make their own food and must consume other organisms to obtain energy.

Decomposers are organisms that break down dead organic matter into simpler molecules. This process releases nutrients back into the environment, which can then be used by producers.

Energy flows from lower trophic levels to higher trophic levels because each trophic level loses some energy to heat. This means that there is less energy available at each higher trophic level.

Biomass decreases from lower trophic levels to higher trophic levels because each trophic level loses some energy to heat. This means that there is less energy available at each higher trophic level, and therefore less biomass.

Top predators play a vital role in food webs by controlling the populations of herbivores, preventing the overgrazing of plants, and helping to maintain biodiversity.

Human activities such as habitat destruction, pollution, and climate change can disrupt food webs by altering the populations of organisms and the flow of energy and nutrients.

Conserving habitats, reducing pollution, and mitigating climate change are all important steps that can be taken to protect food webs.

Food webs provide us with food, regulate the climate, and maintain biodiversity. Protecting food webs is essential for the survival of our planet.

A food chain is a linear sequence of organisms, where each organism eats the one below it. A food web is a complex network of interconnected food chains, where organisms can eat multiple different things and be eaten by multiple different things.