Prediction a - Plants grown at higher CO2 levels will produce more pollen.
Hypothesis 2 b - CO2 levels affect the concentration of protein allergens in ragweed pollen.
Prediction c - Plants grown at higher CO2 levels will produce higher concentrations of allergens.
Researchers developed two hypotheses to explain why ragweed allergies appear to be getting worse as the global climate changes.• CO2 levels affect ragweed pollen production, with plants that grow at higher CO2 levels producing more pollen.
CO2 levels affect the concentration of allergens (the proteins that actually trigger allergic reactions) found in ragweed pollen, with plants that grow at higher CO2 levels characterized by pollen with higher concentrations of allergens.
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Answer:
5] Neutron: Charge= 0 Atomic mass unit = 1
10] <u>Hydrogen:</u>
Number of protons = 1
Number of neutrons = 0
Number of electrons = 1
Atomic number = 1
<u>Helium:</u>
Number of protons = 2
Number of neutrons = 2
Number of electrons = 2
Atomic number = 2
<em>Note:</em>
<em>Atomic number = proton number</em>
<em>Neutron number = Mass number - atomic number</em>
<em>Number of electrons = number of protons</em>
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Answer:
Moths make use of several self defending techniques to avoid predators.
Explanation:
Most people often confuse moth with butterflies, but moth are a different member of Lepidoptera, an flying insect. There are many ways through which moth protect themselves from predators.
Since moths are usually active during the night time, so they often hides in the day time from predators. Another technique that moths use is camouflage, where they can confuse the predators by blending into the surrounding. And when a predator us unable to see a moth, its life is saved. Apart from this, moths are even clever enough to trick bats by their strong detection power.
Well, from what I know..
In high elevations, there are fewer air molecules above a given surface than a similar surface at lower levels. Most of the atmospheres molecules are held close to the earth's surface by the force of gravity and hence air pressure decreases rapidly at first, then more slowly at higher levels.
Sooooo if the pressure in an airplane cabin isn't changed, it can cause injury or harm to passengers and oxygen equipment is required above 8,000 altitude.