Answer: C) The benthic invertebrates would decrease in population size because they are eaten by the sea ducks and the phytoplankton would increase in population size.
Explanation:
The benthic invertebrates are eaten by sea ducks. Sea ducks are eaten by bald eagles. If the bald eagle was removed, there would be more sea ducks because they will have no more predators. Since there are more sea ducks, they will need to eat more food, like benthic invertebrates. The benthic invertebrates would have a lower population because the sea ducks eat more of them.
Why not the other answers:
A) The bivalves would not increase in population size. Without the bald eagle preying on sea ducks, there would be more sea ducks, who need to eat more food, such as eating more bivalves.
The phytoplankton would not decrease. With sea ducks eating more food, more benthic invertebrates are eaten. There would be less benthic invertebrates to eat phytoplankton.
B) Tundra swans were never eaten by bald eagles. There is no arrow connecting them.
D) Wading birds were never eaten by ospreys. There is no arrow connecting them.
Explanation:
Air moves into the lungs when the air pressure in the lungs is lower than the air pressure outside of the lungs. This occurs when the muscels of the diaphragm contract.
You can see this by breathing in and out deeply. When you breath in you can feel your chest being pushed up and out by your diaphragm. The reason the pressure in the chest is lower is that when you breathe in you are increasing the volume of your chest. As there is the same amount of air in your chest the pressure decreases.
Answer: earth because the moon doesn’t have gravity and the sun would burn you and who knows about pluto
Answer:
Explanation:
Food chain may be a linear sequence of transfer of energy when one organism is being eaten by another organism in an ecosystem. The transfer of energy are often explained by 10% law which states that energy decreases by 10% because it is being transferred from lower to subsequent higher trophic level. there's a limit to the amount of levels that a organic phenomenon can reach this is often due to the subsequent reasons:
1. a big amount of energy is lost thanks to the very fact that organisms undergoes respiration . This lost energy can't be reverted back. Hence, limits the quantity of energy being transferred to the upper trophic levels.
2. a number of the undigested waste is excreted by the organisms. This waste being the a part of biomass gets lost within the environment, which again limit the quantity of overall energy being transmitted to the upper trophic levels.
3. Not all organisms are consumed by other organisms belonging to the distinct trophic levels. a number of them might not survive or die.
I'm not entirely sure, but I think it is B) the pulley.