Answer:
Producers are the source of energy in a food chain.
Explanation:
Producers, through the process of photosynthesis, make their own food. When a primary consumer eats the producer, they get the energy stored by the producer. When a secondary consumer eats the primary consumer, the energy is transferred again.
Answer: A niche is the role an organism plays in the ecosystem.
Explanation: A niche also determines how the organism interacts with other organisms in an ecosystem
The build up of lactic acid will need oxygen to break it up. Lactic acid is why muscles feel tired after excess exercise
NOT EXACT DEFINITION: Diseases that can be passed from one living organism to the other. Two examples are flu and several STIs (such as herpes). Sorry I couldn’t think of any more :)
