Class work OA
The student then covered the dishes and very carefully placed them in different temperatures. She ten them for two
hours then she measured how far the red colour had dithised into the agar around each hole
The table shows the students results.
Dish
Temperature/°C
Distance red colour had diffused into the jelly/mm
Nole 1 Nole 2 Hole
Hole 4
2
Mean (average)
1
20
0
4
11
19
10
23
21
18
a Complete the table by calculating the mean distances diffused by the red colour in each dish (Give each distance

Monitor and apply fix up stratorgies

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

What pattern of migration do whales follow?