Middle School science

1. Which of the following is NOT one of the major interactions between organisms in an ecosystem?

a.	submission	c.	competition
b.	symbiosis	d.	predation

Please select the best answer from the choices provided

Which of the following factors does NOT limit population growth?

a.	species	c.	space
b.	carrying capacity	d.	food

Which disturbance would result in primary succession?

harvesting wheat by using a combine harvester at the end of the growing season

controlled burning to stimulate the growth of forest trees such as sequoia

the formation of Surtsey, a volcanic island off of the southern coast of Iceland

the effect of a large herd of elephants on the grasses and shrubs in an area
4.

If you count 20 beetles in a garden measuring 5 square meters, the population density of the beetles is

Mutualism, commensalism, and parasitism are the three types of