Why is scientific notation used?
to round numbers to the nearest whole number.
to promote reproducibility of data.
to increase the validity of data.
to express very large or very small numbers.

to express very large or very small numbers.c

Step-by-step explanation:

Scientific notation or scientific form is a way of expressing numbers that are too large or too small to be appropriately written in decimal form.

It is expressed as the product of a decimal form of number [commonly between 1 and 10] and powers of ten.

Hence, the scientific notation used to express very large or very small numbers.

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.