In the human respiratory system, gas exchange occurs across the cells of the alveoli. Alveoli or an alveolus is the deepest part of the human respiratory system. This part of the respiratory system is a place where gas exchange between oxygen and carbon dioxide occurs from inhaled air to the blood cells<span>.</span>
Is there a picture with this question? It seems like there's background information which isn't being shown here.
Pedigrees are basically a map of alleles for family trees
______Person1 -- Person2_____
I I I I
__Person3_ Person 4 Person5 _Person6___
I I I I I
Person7 Person8 Person9 Person10 Person11
And under everyone's name you write their alleles.
Punnett squares give the probability of someone having genes based on their parents' genes.
Parent1 (Aa) or Parent1 (aa)
Parent2 (AA) AA Aa Parent2 (Aa) Aa aa
AA Aa aa aa
When stomata are open, carbon dioxide enters the plant through stomata. Carbon dioxide is necessary for the process of photosynthesis in which it is converted together with water into oxygen and glucose. For most plants, it is necessary that stomata are opened during the day when there is a lot of Sunlight also necessary for the process of photosynthesis.
However, some plants from the arid locations have <span>stomata closed during the day, so they reduce water loss that way. In the night when is colder, stomata open and carbon dioxide enters through stomata. </span>
The hydrologic cycle is another name for the water cycle.
