Kaled

Which group of plants have nitrogen fixing bacteria in their root nodules? A. Grass. B. Phytoplankton. C. Legumes. D. Seaweeds.

Nitrogen fixation is carried out primarily by humans by... A. Humans. B. Plants. C. Bacteria. D. Consumers.

Which one of the following best describe a eutrophic lake? A. algae bloom, low oxygen levels, high diversity of species. B. algae bloom, high diversity of species. low oxygen levels, C. algae bloom, low oxygen levels, high diversity of species. D. algae b...

Which of the following is an example of bioamplification? A. Too many herbivores in an ecosystem, due to loss of predators. B. An oil spill that destroys all marine life. C. An excess of nitrogen which causes algal cloom on the water's surface. D. High le...

Some possible properties of modern insecticides are listed below, When these insecticides are used which property helps to keep environmental pollution at the lowest level? A. Accumulation in the bodies of predators. B. Quiqly broken down by bacteria. C....

With which of the following is the study of an ecosystem Most concered? A. Determining population changes in the area being investigated. B. Making measurements of regional variaties in temperature, wind velocity, and precipitation. C. Analyzing the inter...

The number of organisms of the same species living within the total area of their entire habitats is best known as... A. Population size B. Ecological desity C. Crude density D. None of the above

Aww man~ Why do you peeps always link me to reading alot??? It is too boring! Just tell me which one is it.

In a field having an area of 3.0 ha is a colony of ground squirrels with 90 members. What is the density of the ground squirrel population? A. 90 ground squirrels. B. 270 ground squirrels/ha. C. 30 ground squirrels/ha. D. 0.030 ground squirrels/ha.

In a population being studied over a limit of time, four eggs hacth, six birds leave the area, three are eaten by cats, and five move into the area. What is the population change over the period of study? A. An increase of 2 birds. B. A decrease of 4 bird...

A population whose growth is influenced by births, deaths, immigration, and emmigration is described as which of the following? A. Open B. Closed C. Geometric D. Exponential

As the number of racoons in a foest increases, the availablity of nesting sites limits population growth. This describes which of the following? A. A density-dependent factor. B. A density-independent factor. C. Intraspecific competitaion. D. Both A and C...

Overpopulating rabbits in Australia were finally controlled by a disease spread trough the population. A higher death rate was recorded in regions with large population than small population. The disease can be considered.... A. A density-dependent factor...

That did not help very much.

Too lazy to think...NEED ACTIVE BRAINS!!!!! Jokes aside I think either A, B, C, or D Ok for real I think it is A but I am not too sure.

Dang! I really do need active brains... Is it B?

Oh, is it C?

Because this thing is hard. Besides I already had 3 unit tests today so I need a break but I want to be free on weekends so i have to do this now.

Exactly! see what happens when you try to answer 100 kids at once? It is the same thing as taking on 100 questions on the unit test.

It is? I thought it was D. So is it A 'cuz I don't know what Accumulation means.

Then is the answer A or B ?

Ok sorry. I'll try to be more smart next time.

Oh so if it is ha all i need to do is that? divide everything by 3? sorry i didn't learn what ha is

AHA! SO D IT IS!!! Anyway have a great night guys girls Ms. Sue see yous tommorow I hope.

Then is it A? I do not have a text. These questions are from a science review sheet for my unit test on monday.