Question 18 5.48 pts
In science we use very big and very small numbers. Scientists have developed units of
measurement which make the numbers easier to manage. For example, instead of saying that
the Sun is 93 million miles from the Earth, it is easier to say the Sun is one
from
the Earth. In science that is the unit of measure for the distance from the Sun to the Earth.
A) space unit b) light unit. C) planetary unit d) astronomical unit

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one