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TiliK225 [7]
3 years ago
6

How did earth end up with so much oxygen

Biology
2 answers:
ozzi3 years ago
5 0

Answer: plants such as trees convert carbon dioxide into oxygen, which gives the earth a constant supply of oxygen.

Explanation:

UNO [17]3 years ago
4 0
Cause of all the the trees produce
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Helphelphelphelphelphelp​
il63 [147K]

Explanation:

The Waxing Crescent Moon. This intermediate Moon phase comes after New Moon and lasts until half of the Moon's visible surface is illuminated at First Quarter Moon.

The Waning Gibbous Moon. This intermediate Moon phase comes after Full Moon and lasts until half of the Moon's visible surface is illuminated at Third Quarter Moon.

So 1 is the right answer

4 0
3 years ago
Describe the behavior of the frog heart that you can elucidate from the force recording (e.g., mechanical events). How can you u
Sladkaya [172]

Answer:

P wave and R wave

Atrial contraction = P wave

Ventricular contraction = R wave

Explanation:

The behavior of the frog heart from force recording  can be classified into ; P wave and R wave.

utilizing the ECG ( Electrocardiogram) data the aspect of the force recording that is due to atrial contractions is the ; P wave while the force recording that is due to ventricular contractions is the ; R wave  the ventricular contractions is also known as QRS

ECG is used to record the electrical activities of a heart at rest

3 0
3 years ago
17. Addition of hydroxide ions to a solution will
JulijaS [17]

Answer:

D

Explanation:

Addition of hydroxide ions will decrease its acidity and make it more basic.

3 0
3 years ago
What concentration level is the outside of the cell considered?
anzhelika [568]

Answer:

Direction of Osmosis

Explanation:

5 0
3 years ago
How did receptors in the nose and on the tongue help our ancient ancestors survive?
Leni [432]

Answer:Our ancestors’ perception of taste was important for survival and thriving. Now researchers are trying to produce food with reduced calories or salt that remains palatable

Explanation:

Evolution of taste

Our ancestors had to seek out their food from the environment, and their perception of taste was important for survival and thriving. ... They work with foods that are being produced in a manner that reduces calories or salt or adds ingredients with potential health benefits from plants

7 0
4 years ago
Read 2 more answers
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