2 questions in 1: jimmy is running laps during his physical education class. As he is running, he starts to breathe harder as his body tries to get more oxygen. Which of the following best explains why Jimmy’s oxygen requirement increases?

1. His cells use oxygen as their primary source of energy.
2.His cells need oxygen to help break down sugars for energy.
3.His cells need oxygen to increase the levels of sugars in the blood.
4.His cells use oxygen to transport substances across their cell membranes

One of your cells has taken in a sugar molecule from a cookie you ate at lunch. The sugar molecule contains atoms of carbon. Which best explains what will happen to the carbon after your body processes it? *

1.It is recycled by the body to create CO₂ which will be stored for later use.
2.It is destroyed as the body breaks it down to use for energy.
3.It is returned to the environment through CO₂ or the decay of organic matter.
4.It is transformed into sugars which will be broken down and used for energy by the body.

Alichen is an organism that structurally appears to be a single organism. but a lichen is actually two different organisms—a fungus and green algae—living together as one organism. the fungal partner derives its nutrition from the photosynthesizing algae. how does a lichen differ in its photosynthetic activity from elysia chlorotica, the sea slug that’s considered to be a photosynthesizing animal? a. in lichens, the fungi photosynthesize on their own, while elysia chlorotica forms a relationship with a photosynthesizing plant. b. in lichens, the relationship with the algae lasts throughout the life cycle, but in elysia chlorotica, the relationship occurs only during the immature juvenile stage of the slug’s life cycle. c. lichens can photosynthesize only because of the living algal partner, while elysia chlorotica incorporates chloroplasts from algae into its cells. d. in lichens, the association between the fungi and algae is permanent, while elysia chlorotica associates with a photosynthesizing organism only when it requires food.

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Two critical interventions to turn around the opioid crises are: