Meiosis is invovled in the production of gametos (sex cells) so that the plant can reproduce. This usually happens during the time the plant is flowering
A carbon atom has 4 valence electrons
"climate" does not.
Usually if we comparing "weather" condition with another word, the word would be "climate". Weather is the day to day atmospheric condition, but climate is the overall weather of an area throughout long period of time, such as a decade.
Using it in a sentence, we can see the difference. We would say "the weather today is nice", but we wouldn't say "the climate today is nice". "today" is a short period of time.