please could someone help me with these question please i have loked on websites but i am still stuck.

true or false and i need to write a comment why:-

plants photosynthesise 24 hours a day

respiration uses up carbon dioxide

thanks guys!

false (photosynthesis requires light)

true (carbon dioxide is consumed and oxygen is produced)

First link I tried: photosynthesis does not occur at night.

http://www.newton.dep.anl.gov/askasci/bot00/bot00191.htm

If you are talking about respiration of humans, we exhale CO2 so we aren't using it up. Plants use CO2.

Of course, I'd be happy to help you with these questions! Let's break them down one by one:

1. "Plants photosynthesize 24 hours a day."
To determine whether this statement is true or false, we need to understand the process of photosynthesis. Photosynthesis is the process by which plants convert light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen. However, photosynthesis requires sunlight to occur.

Since sunlight is not available 24 hours a day, we can conclude that plants do not photosynthesize continuously throughout the day and night. Therefore, the statement is false. Plants undergo photosynthesis during the presence of light, typically during the day, and stop photosynthesizing during the absence of light, such as at night.

Comment: "Plants do not photosynthesize 24 hours a day because photosynthesis requires sunlight, and sunlight is not available throughout the day and night."

2. "Respiration uses up carbon dioxide."
To determine the accuracy of this statement, we need to understand the process of respiration. Respiration is the process by which living organisms convert glucose and oxygen into energy, carbon dioxide, and water.

During respiration, organisms take in oxygen and release carbon dioxide as waste. Therefore, respiration actually produces carbon dioxide rather than using it up. Therefore, the statement is false.

Comment: "Respiration does not use up carbon dioxide, but rather produces it as a waste product."

I hope this helps clarify the answers to your questions! Let me know if there's anything else I can assist you with.