Answer the following question given this paragraph: Rounding is done when one or more ending digits are dropped to get the correct number of significant figures. Simple rules state when to round up and when to round down. Q: What is it called when one or more ending digits are dropped to get the correct number of significant figures? A:

OPTIONS:
- basing
- turning
- scientific notation
- rounding

Answer: rounding

Problem: OPTIONS:
- change direction
- get larger
- get thicker
- grow downward
Q: Answer the following question given this paragraph: Roots have primary and secondary meristems for growth in length and width. As roots grow longer, they always grow down into the ground. Even if you turn a plant upside down, its roots will try to grow downward. How do roots "know" which way to grow? How can they tell down from up? Specialized cells in root caps are able to detect gravity. The cells direct meristem in the tips of roots to grow downward toward the center of Earth. This is generally adaptive for land plants. Can you explain why?. Q: As roots grow longer they will always do what? A:
Answer: grow downward

Problem:OPTIONS:
- once each month
- ever 3 years
- every other year
- once each year

Answer the following question given this paragraph: Earth rotates on its axis once each day and revolves around the Sun once every year. Q: Earth rotates on its axis once each day and revolves around the sun how often? A:
****
A: once each year

Answer the following question given this paragraph: A solution is a mixture of two or more substances that has the same composition throughout. Some solutions are acids, some are bases. Q: Acidity is measured by what physical property? A:
OPTIONS:
- k
- ps
- amp
- ph
ph

Answer the following question given this paragraph: A series of chemical reactions where an initial amount of copper reacts with nitric acid, goes into solution, and disappears. Then a series of reactions proceed, only to have the copper metal recovered. The copper cycle is a good illustration of how mass is conserved in a given chemical reaction. Q: The cycle of copper reacting is a good example of what principle? A:
OPTIONS:
- law of inertia
- conservation of energy
- conservation of momentum
- conservation of mass

Answer: conservation of mass

input with options: Answer the following question given this paragraph: Q: Drip iirigation requires less water and reduces what? A:
OPTIONS:
- moisture
- bacteria
- sediment
- salinization
output:
salinization