The diagram shows an energy pyramid. Energy Pyramid
Sunlight
1,000,000
Third consumers
10 J
energy loss
Second consumers
100 J
First consumers
1000 J
Producer
10,000 J
Food chain
Which two sentences best explain what happens to energy in this
ecosystem?
A. Each organism gains energy from its surroundings.
B. Energy is lost as it flows through the links in a food chain.
C. Each organism loses energy as body heat.
D. Energy is gained as it flows down the pyramid.

B

Explanation: Each time an organism consumes another one the energy is lost by 90%. So an animal will only ever receive 10% of the initial energy.

If a producer has 100 J of energy and a deer comes to eat it they only will get 10%, so 10 J. If a mountain lion eats the deer it will only get 1 J, because the 10% rule. Each time another organism consumes another use the 10% rule.

The correct answers are~

Hope this helps :)

a. the production of carbon dioxide through the process of photosynthesis

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.