Question

grass starts with 30,000 kcal of energy. a cheetah would acquire kcal of energy after it ate a zebra that had consumed the grass.

Explanation:

Step1: Energy transfer rule

According to the 10% energy transfer rule in an ecosystem. When an organism consumes another organism, only about 10% of the energy is transferred to the next trophic level.

Step2: Calculate energy for zebra

Grass has 30,000 kcal. Zebra (herbivore) eats grass. Energy for zebra: \(30000\times10\%=3000\) kcal.

Step3: Calculate energy for cheetah

Cheetah (carnivore) eats zebra. Energy for cheetah: \(3000\times10\% = 300\) kcal.

Answer:

300