Answer:
Oxygen molecules in the tissues of the lung diffuse into the blood because the concentration of oxygen in the lung's tissues is more than the concentration of oxygen in the blood.
Explanation:
Diffusion is the movement of molecules from the region of higher concentration of the molecule to the region of lower concentration of the same molecule. Molecules in diffusion move <em>downward the concentration</em> <em>gradient</em> created by difference in concentration between two regions until an <em>equilibrium (equal concentration in the two regions)</em> is established.
Oxygen molecules diffuse into the tissues of the lung when an organism breathes-in during the process of breathing. The molecules in the now oxygen-rich tissues eventually start diffusing into the blood in the lung because the blood passing through the lung is always de-oxygenated or has lower oxygen concentration compared to the tissues of the lung.
Oxygenated blood moves into the heart, pumps round the body by the heart, gets depleted of oxygen and eventually find its way back to the lung where the process is repeated.
Diffusion of oxygen from the tissues of the lung into the blood will keep happening as long as oxygen keeps getting dissolved into the lung's tissues and an equilibrium is yet to be established between the tissues and the blood.
Answer:
They are co-dominance and incomplete dominance.
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Explanation:
Co-dominance occurs when both alleles in a heterozygous genotype for a trait are both equally expressed. An example is the human AB blood group, in which both the A and B alleles are equally expressed.
Incomplete dominance occurs when the heterozygous genotype for a trait is expressed as a blend. An example is blue feather color in chickens, in which a black allele and white allele together are expressed as blue feather color.
Answer:
YO YO YO YO
Explanation:
ITS TIME TO DRIVE YOUR CAN YOU WILL TRAVEL VERY FAR LEFT RIGHT FAST AND SLOW START ER UP ITS TIME TO GO
From the following items:
1. An atmosphere containing oxygen
2. wooden furniture
3.food, including vegetables, fruits, and meats
4.fibers to make cloth
5. drugs such as aspirin
6. fossil fuels such as oil, gas, coal and nutrient-rich soil
ALL of these things are one way or another, exist because of green plans. E.g. Oxygen is released by plans, while wood for furniture comes from trees.
All fruits and vegetables are grown on plans while even meat comes from animals who eat green plans.
Fibres such as wool also come from animals which eat plans, and fossil fuel is made from the remains from millions of years of old plans in the ground.
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