<span>The amount of energy at each trophic level decreases as itmoves through an ecosystem. ... An energy pyramid is a model that shows the flow of energy from one trophic, or feeding, levelto the next in an ecosystem. The model is a diagram that compares the energy used by organisms at each trophic level.</span>
Explanation:
1. they are convenient to use 2. it helps the international tade 3. it eases the exchange of material
<span>D.The DNA code is translated by tRNA and then carried to the ribosomes by rRNA.</span>
Answer:
kg
Explanation:
the base unit of mass is kilograms (kg)