(Score for Question 5: of 2 points) 5. What is the relationship between land use in general and deforestation?
(Score for Question 6 of 3 points)
6. Visit NASA's Earth Observatory page on deforestation (https://earthobservatory. nasa. gov/world-of-
change/Deforestation). Click play on the image to watch a slideshow of images of satellite photos of Rondônia
in western Brazil. What are the signs of deforestation in the images? What are the primary causes of the
deforestation you observe?
(Score for Question 7:of 2 points)
7. How does this deforestation affect the fertility of the land?
(Score for Question 8: of 2 points)
8. What could we change about the way we use land to reduce deforestation, such as that observed in
Rondônia?

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .