Apopulation of shrimp suddenly starts collapsing. a biologist believes that toxins in the food chain are interfering with larvae development. a climate scientist believes that a change in water temperature is depleting food sources from the water. why are both of these options valid scientific hypotheses?

Both options are valid because they have happened before and can influence the mentioned drop in the population. Toxins in the food chain, just like the increase of water temperature, are easily proven and found and are mostly human made.  

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.

Idk i think the answer choice is number 1