Question 9 of 20 : Select the best answer for the question.
9. What is true of increased levels of co, in the atmosphere?
O A. It always helps plants grow.
O B. It helps some plants grow better, while others experience less growth.
O C. It reduces the amount of climate change.
O D. It's poisonous to plants.
O Mark for review (Will be highlighted on the review page)
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I'm sorry to hear that. i will try to answer your other questions if it is within my ability. : )answers: my favourite colour is black.my favourite food is pasta.my favourite school subject is english, but i do also like lunch time.my least favourite subject is history as well as geography. i have currently garnered a quite equal hatred for both of the subjects.what about you? well, you for the points. : )

What is a question answer because there is no answers and i need answers for the question