In a biology lab, 5 groups of students went outside to the football field to survey the dandelion weed population. The students also observed that there were no trees nearby, and the field was watered twice every day. The following bar graph indicates the number of dandelions counted by five groups of students on a football field.
http://tinypic.com/usermedia.php?uo=ru02A%2F45RKB3Kcxv%2BfiCTYh4l5k2TGxc
On average, how many dandelions did the students count per square meter?
1
2
3
4
The football field is approximately 5400 sq meters. Use the average number of dandelions per square meter to estimate the size of the dandelion population on the football field?
15, 200
9, 200
21, 600
10,800
Which of the following could be a limiting factor for dandelions on the football field?
space
sunlight
food
carbon dioxide
What is an adaptation that helps the dandelion’s population growth?
need for sunlight
hairs on its stems
feathers on its seeds
short life cycle
Dandelions are the preferred diet of some beetle species. Because the school did not want to use chemicals on the grass, the gardener released a couple 100 of these beetles onto the football field to help get rid of the weeds. Knowing what you do about population dynamics, how might the beetle population be affected by the gardener's action? Will the beetle population decrease or increase? Explain your answer in at least 2-3 sentences.
http://tinypic.com/usermedia.php?uo=ru02A%2F45RKB3Kcxv%2BfiCTYh4l5k2TGxc
On average, how many dandelions did the students count per square meter?
1
2
3
4
The football field is approximately 5400 sq meters. Use the average number of dandelions per square meter to estimate the size of the dandelion population on the football field?
15, 200
9, 200
21, 600
10,800
Which of the following could be a limiting factor for dandelions on the football field?
space
sunlight
food
carbon dioxide
What is an adaptation that helps the dandelion’s population growth?
need for sunlight
hairs on its stems
feathers on its seeds
short life cycle
Dandelions are the preferred diet of some beetle species. Because the school did not want to use chemicals on the grass, the gardener released a couple 100 of these beetles onto the football field to help get rid of the weeds. Knowing what you do about population dynamics, how might the beetle population be affected by the gardener's action? Will the beetle population decrease or increase? Explain your answer in at least 2-3 sentences.