A - The alveoli have a membrane that is only one cell thick to allow for a short diffusion time to capillaries.
The answer to your question is mass.
Answer:
greenhouse gases trap more heat in Earth's atmosphere.
Explanation:
the burning of fossil fuels emits large quantities of CO2 into the atmosphere, which contributes to cause climate change by trapping heat.
The answer for the question is Migraine<span>. Migraines Headaches are extremely, nearly paralyzing headaches that are located on one side of the head and are sometimes accompanied by dizziness, nausea, or vomiting. They normally develop in two phases; The first phase, in which blood vessels in the brain narrow (vasocontsriction), such that the flow of blood to arts of the brain is reduced. Second phase; occurs when the blood vessels expand, such that blood flows through them rapidly, thus stimulating many neuron endings and causing pain. </span>
<span>The water molecule, as a whole, has 10 protons and 10 electrons, so it is neutral.In a water molecule, the oxygen atom and hydrogen atoms share electrons in covalent bonds, but the sharing is not equal.In the covalent bond between oxygen and hydrogen, the oxygen atom attracts electrons a bit more strongly than the hydrogen atoms.The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule.<span>Water molecules attract one another based on the attraction between the positive end of one water molecule and the negative end of another.</span></span>
