The answer is between A and C.
Soil is composed of disintegrated rock particles, humus, water and air. Litter is composed of humus and leaf litter. Also called nutrient cycle, The Gersmehl diagram was created in 1976 by P. F. Gersmehl whit the purpose of showing the differences innutrient flow and storage betweendifferent ecosystem
Answer:
C
Explanation:
Keystone species is the sea otter. Sea otters, playing a critical role in containing the urchin populations, prey on urchins and thus control the numbers of kelp grazers to maintain the forest.
Remember, keystone species is most often a top level predator in an ecosystem.
900J
Explanation:
Given parameters:
Specific heat of the aluminium = 900Jkg⁻¹K⁻¹
Mass of aluminium = 0.5kg
temperature change = 2K
Unknown:
Quantity of heat = ?
Solution:
The quantity of heat a body absorbs to cause a change in temperature is given as:
H = mcΘ
H is the quantity of heat
m is the mass of the substance
c is the specific heat capacity
Θ is the temperature change
H = 0.5 x 2 x 900 = 900J
learn more;
Specific heat brainly.com/question/7210400
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