Người ta ước tính rằng sau t năm tính từ bây giờ, dân số ở một vùng ngoại ô sẽ là P(t)=20-6/t+1 nghìn người.

no not all of them.

step-by-step explanation:

some of them have a square base.

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.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

i think the answer is seven, for if i'm being useless °ω°

step-by-step explanation: