Mary and tommy are measuring 10 grams of sugar on an electronic balance that measures to the hundredths of a gram. tommy records his sugar as 10 grams and mary records her sugar as 10.00 grams. mary's recording of the data is
a) the same as tommy's.
b) greater than tommy's.
c) more precise than tommy's
d) more accurate than tommy's.

Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. makes predictions

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

Me brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula.5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects.8. describe the planets’ orbits around the sun.9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets.13. what causes the seasons?