If carrots were removed from the food web, how might the other populations be affected? There might be more rabbits and foxes.
There might be more grass but fewer owls.
There might be fewer rabbits and foxes.
The rabbits might start eating mice.

there might be fewer rabbits and foxes

Explanation:

If carrots were removed from the food web then there might be fewer rabbits and foxes. This is because based on this web, carrots make up 50% of the rabbit's diet. If this is removed, then there would not be enough food to maintain the same size population and the population will begin to shrink. This also applies to the fox population since their main source of food are the rabbits. If the rabbit population decreases, then the fox population will decrease as well since their food supply has shrunk and will not be able to maintain the current fox population size.

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.