Question

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Answer 1

Answer:

the process by which plants make their own food is known as photosynthesis. in this process the plants take in carbon dioxide and release oxygen which is very essential for our living

Explanation:

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Answer 2

Answer:

Question:-

A certain freezing process requires that room temperature be lowered from 40°C at the rate of 5°C every hour. What will be the room temperature 10 hours after the process begins?

To Find:-

Find the room temperature after 10 hours.

Solution:-

Given ,

Present temperature of room = 40°C

Rate of temperature decreases 5°C per hour

First ,

We have to find how many °C will decrease in 10 hours:-

\sf\longrightarrow \: 5 \times number \: of \: hours ⟶5×numberofhours

\sf\longrightarrow \: 5 \times 10 ⟶5×10

\sf\longrightarrow \: 50°C ⟶50°C

Now ,

We have to subtract 50°C from the room current temperature:-

\sf\longrightarrow \: 40 - 50 ⟶40−50

\sf\longrightarrow \: - 10°C ⟶−10°C

Hence ,

- 10°C is the temperature after 10 hours