The bar chart shows how the area of the ozone hole over Antarctica has changed. 25
20
8915
average size of ozone hole
(million square kilometers)
5
Lili
10
5
0
1980 1990 2000 2012
year
a.
b.
Calculate the increase in its size between 1980 and 2000. (2mks)
Describe what has happened to the hole since the year 2000. (2mks)
Suggest a reason for this.
(2 mks)
C.

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

Explain the significance of the increased cell specialization of the volvocine line

Graded assignment lab report answer the questions below. which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.