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Karo-lina-s [1.5K]
3 years ago
12

Which is considered an external environmental factor that contributes to bronchoconstriction?

Biology
1 answer:
gtnhenbr [62]3 years ago
5 0
Bronchoconstriction happens when smooth muscles around the lungs constrict and block the flow of air in the lungs. This can happen because of internal factors due to diseases such as asthma and inflammatory diseases, but it can also be caused by external factors such as changes in humidity, temperature, and pressure of the air and also excessive workout.
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Please help me.:))) please
sleet_krkn [62]
Be specific, with what?
4 0
3 years ago
Which type of fault creates oceanic rifts and rift valleys?
ra1l [238]

Answer:

divergent plate boundary

A rift valley is formed on a divergent plate boundary, a crustal extension or spreading apart of the surface, which is subsequently further deepened by the forces of erosion.

Explanation:

7 0
3 years ago
After cooking the hot dogs, your friend's mom reminds you not to leave the grill out, or the iron (Fe) in the grill will react w
sammy [17]

Answer:

Explanation:

Oxygen gas and water must be present for iron to rust.

A region of the metal’s surface serves as the anode, where oxidation

occurs:

Fe(s) → Fe²⁺ (aq) + 2 e⁻

The electrons given up by iron reduce atmospheric oxygen to water at the cathode, which is another region of the same metal’s surface:

O₂ (g) + 4H⁺ (aq) + 4 e⁻ → 2 H₂O (l)

The overall redox reaction is:

2 Fe(s) + O₂(g) → 4H⁺(aq) + 2Fe²⁺ (aq) + 2 H₂O(l)

The Fe²⁺ ions formed at the anode are further oxidized by oxygen:

4 Fe²⁺ (aq) + O₂(g) 1 (4 + 2x) H₂O (l) → 2 Fe₂O₃ . xH₂O(s) + 8 H⁺(aq)

This hydrated form of iron(III) oxide is known as rust. The amount of water associated with the iron oxide varies, so we represent the formula as 2 Fe₂O₃ . xH₂O.

8 0
3 years ago
Help please!!!!!!!!!!!
DENIUS [597]

Answer:

d

cause

Explanation:

8 0
3 years ago
List 5 observations Darwin made about the Amblyrhynchus lizards.
Lady bird [3.3K]

They are poikilothermic or cold-blood

been seen eating the feces of crabs and sea lions

only ocean dwelling iguanas in the world

orient themselves so that they absorb sun through the skin

salt glands connected to the nostrils allows them to expel access sea salt

3 0
3 years ago
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