HELP

Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer

Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to

Plants need carbon dioxide from their environment to produce glucose during which stage of photosynthesis?

How many neutrons does element x have if its atomic number is 29 and its mass number is 86?