9) the tools in the lab are expensive because... they are made with small parts that are not available everywhere.
only one country carries the supplies.
they are made with large parts available for purchase everywhere.
they are different for every lab, hand crafted.
only one store sells em.

How do you date a sample of rock that you suspect as being one of the earliest on earth

How do living things obtain phosphorus

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.