A scientist wanted to find out if the height of a shrub would make it more prone to frost damage. He found a hillside covered with shrubs and trimmed all the shrubs located at the
bottom to one meter tall. He left the shrubs growing at the top of the hill untrimmed. They
ranged from one to three meters tall. After a heavy frost, he found that 90% of the shorter
shrubs had frost damage while only 10% of the tall shrubs did. He concluded that short
shrubs were more likely to suffer frost damage than tall shrubs. When he submits his
research report for review by other scientists, which of the following arr they likely to
criticize about his experiment?
A. His hypothesis that shrub height might influence frost damage is not a question
worth testing.
B. His conclusion is inaccurate because the location of the shrubs on the hillside
might also have contributed to where frost damage occurred
C. His methods of recording frost damage must have been biased toward tall shrubs
since there was such a large difference in frost damage.
D. His results are not valid because he had some shrubs in the tall group that were
close to each other.

In what cells is the human genome located?

Lupe is a carrier for color blindness. her husband clifford is colorblind. if lupe and clifford have four children, what's the probability of a boy being colorblind?

Is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance