Question

Полевки за лето съели в поле 120 г зерна .рассчитайте оставшийся урожай зерна в кг если известно что прирост биомассы полевок к концу лето составил 0.01% от урожая . переход энергии с одного трофического уровня на другой в данной цепи питания составляет 10%

Answer 1

Биомасса
120кг-100%
x-10%
x=1200
уражай зерна
1200кг-0.01%
x-100%
x=12000000
оставшийся урожай
12000000-120кг=11999880

Answer 2

To calculate the remaining harvest of grain in kilograms, we need to consider the initial amount of grain and the biomass growth of the field mice over the summer.

Given: - Field mice ate 120 grams of grain in the field over the summer. - The biomass growth of the field mice by the end of the summer was 0.01% of the harvest. - The energy transfer from one trophic level to another in this food chain is 10%.

Let's calculate the remaining harvest of grain:

Calculation:

1. Convert the biomass growth percentage to a decimal: 0.01% = 0.0001. 2. Calculate the biomass growth of the field mice: 0.0001 * 120 grams = 0.012 grams. 3. Subtract the biomass growth from the initial amount of grain: 120 grams - 0.012 grams = 119.988 grams. 4. Convert the remaining grain from grams to kilograms: 119.988 grams / 1000 = 0.119988 kilograms.

Therefore, the remaining harvest of grain in kilograms is approximately 0.119988 kilograms.

Please note that this calculation assumes that there were no other factors affecting the grain harvest, such as additional consumption or loss.