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Leokris [45]
3 years ago
6

Air moves into the lungs when the air pressure in the lungs is than the air pressure outside of the lungs this occurs when the m

uslces of the diaphragm
Biology
1 answer:
storchak [24]3 years ago
3 0
Air moves into the lungs when the air pressure in the lungs is lower than the air pressure outside of the lungs. This occurs when the muscels of the diaphragm contract.

You can see this by breathing in and out deeply. When you breath in you can feel your chest being pushed up and out by your diaphragm. The reason the pressure in the chest is lower is that when you breathe in you are increasing the volume of your chest. As there is the same amount of air in your chest the pressure decreases.
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2.The death of individuals reduces population size. If births outnumber deaths, the population grows.
valentinak56 [21]

Answer:

True

Explanation:

This would be like a birth to death ratio. If you have more deaths than births your population would decrease. See a similarity?

3 0
3 years ago
Which statement best describes the relationship of photosynthesis and energy?
lisabon 2012 [21]

Answer:

in photosynthesis light energy is turned into glucose.

Explanation:

The best explanation of the relationship between energy and photosynthesis is "energy storing" because the process converts light energy into chemical energy which stored in the bonds of glucose.

3 0
3 years ago
Scientists use various types of models to represent real world activity. For instance, computer models are used to predict weath
Annette [7]

Answer:

(B.) their predictions are almost never accurate

Explanation:

A model is a representation of an idea, process that scientists use in explaining a complex data to a more simple and understable way. Models reflect the natural world e.g. climate models are used by humans to learn and to know about carbon cycles, water cycles and the weather. Model do come with some limitations one of them is an incomplete detail e.g. measuring the distance round the earth, we were made to believe that the model of the Earth is spherical, so in calculating the distance round the earth certain details are missing like the variations in distance caused by valleys and mountains and other topological problems that might be encountered.

3 0
3 years ago
Read 2 more answers
5.2x10^-23 grams Nitrogen to atoms
castortr0y [4]

Answer:

2.23 atoms

Explanation:

In this question, we first need to change the mass of Nitrogen to moles by using the formula;

mole = mass ÷ molar mass

Molar mass of Nitrogen = 14g/mol

Mass = 5.2x10^-23 grams

mole = 5.2x10^-23 ÷ 14

mole = 0.371 × 10^-23

mole = 3.71 × 10^-24 mol

Number of atoms in Nitrogen atom = 3.71 × 10^-24 mol × 6.02 × 10^23 atoms (avagadro constant)

= 22.3342 × 10^(-24+23)

= 22.33 × 10-¹

= 2.233 × 10°

= 2.23 atoms

7 0
3 years ago
A region that includes several interacting ecosystems is called ___
kherson [118]
Answer: Landscape

Hope this helps :)
8 0
3 years ago
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