Which two numbers multiply to 100 and add to -20

20 and 10.

I can't explain this, because of the fact that I have not learned this yet, and I might be wrong. But I hope I'm not and I hope I helped! ☺

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.