Think about the design that worked the best. Could you improve the best design and raise its internal temperature? Think about what materials you could use to improve the design. Here are some things to consider:
• How does the size of the reflective surface affect the temperature of the oven?
. Would insulating the oven help it retain heat, or would more heat be lost?
. Would a tighter or a looser cover heat the oven faster? How about no covering at all?

Christie's doctor recommends that she eat 40 grams of protein a day. she's already consumed 50% of her protein recommendation for the day. how many servings of the given snack should christie have to meet her daily protein recommendation?

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

There are specialized producers that live in warm water vents deep in the ocean. these producers do not per-form from photosynthesis, but instead perform a similar process with iron and other chemicals. why do you think these producers use this process instead of photosynthesis?