C: lack of water during long periods..
I’m not sure but I think the answer is B or D
The effector in a negative feedback system acts to counter any changes made to a particular property. If it were positive feedback, it would amplify the change and make it more extreme
Answer:
1. plant use sunlight , carbon dioxide,water. 2. Gulcose and oxygen
4.a)xylem b)phloem
6.leaves
8.roots,stems,flowers,leaves
That means they're not autotrophs, but they're heterotrophs instead. That means they need to get their sugar from other organisms like plants to produce chemical energy stored in ATP
