Answer: b
Explanation:
if thats wrong then its c, hope this helped
The main organ in mammals respiration is the lungs<span>. The lungs are actively ventilated via a suction-pump mechanism of inhalation and exhalation. Breathing is dependent upon the rib muscles and the </span>diaphragm<span>, a structure shaped like a dome-shaped floor just beneath the lungs. </span>
<span>Inhalation happens when the rib cage opens up and the diaphragm flattens and moves downward. The lungs expand into the larger space, causing the air pressure inside to decrease. The drop in air pressure inside the lung makes the outside air rush in. </span>
Exhalation is the opposite process. The diaphragm and the rib muscles relax to their neutral state, causing the lungs to contract. The squashing of the lungs increases their air pressure and forces the air to flow out.
1. C
2. C
3. D
4. D
Explanation:
1.
Population distribution is how the individuals of the population are spatially distributed across the habitat. For example, It could be uniform distribution where spaces between individuals are more or less equal on average or clustered form of distribution where they are many individual clustered at different points.
2.
Carrying capacity is the number of individuals of a population that a habit can sustain indefinitely because they allow for the resource to replenish. If the population exceeds the carrying capacity, it becomes unsustainable and the population will likely experience in ‘burst’ in population size. A decrease in the number of resources therefore also means a decrease in the carrying capacity.
3.
Population is related to one species while a community is to many species in a habitat. Therefore population density is the number of individuals of a species, occupying a habitat, per square area. The higher this figure the higher the population density.
4.
Density-dependent factors mean that these factors are influenced by the density of the population. In this case rate of infection of the disease is dependent on the density of the population The higher the density the higher the infectivity and vice versa.
Wind and water take the heat away and it makes it cold! Hope this helps if I'm wrong I'm sorry
Moths have shifted to a lighter color.
