Which of the following statements is true? Choose 1 answers
Plants create oxygen via photosynthesis which is used by humans in cellular respiration
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Humans are able to produce oxygen via cellular respiration
Oxygen is naturally occurring and does not need to be synthesized.
Air is comprised primarily of oxygen

answer:

I wanna say that the answer is false.

Explanation:

...~ Activity theory predicts that older people will do different activities than younger people, with more time budgeted for leisure. The relationship between age and time spent doing these leisure activities with others, under activity theory, is hypothesized to be positive. ~...

I hope I helped!~

-Koko uwu

No they can't be cured since they aren't just a regular sickness just like the flu can't be cured and the corona virus can't be cured.

Hope this helps! :)