Which of the following is not an abiotic factor in an ecosystem? A Available light B) Temperature C) Water availability D Number of organisms in a population

Ecology as a discipline directly deals with all of the following levels of biological organization except a Population A) Population B) Cellular C) Organism D) Community

4) The figure below displays the three levels of biodiversity. Please label them and the answer the questions below. a) How are these related to one another? What would happen if one or more then one was throw off? b) What are ecosystem services and why are they important to humans? What is an example of an ecosystem service?

Disturbance often affects community structure by __________________. Question 24 options: A) accelerating competitive exclusion B) temporarily decreasing the resource base, then increasing the resource base C) increasing the degree to which a resource is limited D) temporarily increasing the resource base, then decreasing the resource base

At any point in time, a number of environmental objectives must be met with a limited amount of economic resources. This means that once an environmental problem is identified, they have to be prioritized. In general, this is done using scientific valuation of the relative risk to human health and the ecology of a given environmental hazard - a procedure known as: A. Biodiversity B. Public Goods C. Risk Assessment D. Profit maximization

20. In a biological community where diversity is great, such as a tropical rainforest, the abundance of any one species is likely to be A) large in number B) small in number C) widely variable from year to year D) the same from year to year

7)Which of the following is the best definition of a trophic cascade? a)Significantly changing the population size of one species causes significant changes in the population dynamics of other species b)Adding or removing one species causes significant changes the population dynamics of other species in the community c)Significantly changing the population size of a species at one trophic level causes significant changes in the population dynamics of populations that do not directly interact with this species d)Adding or removing species causes a collapse of the food web for that community e)None of these definitions are accurate

You will be examining the relationship among organisms inhabiting a small lake. Examine the “Lake Inhabitants” sheet for information about the organisms found in the lake.  What biotic and abiotic factors will affect the aquatic plants in the lake?    What biotic and abiotic factors will affect the bluegill in the lake?    Looking at the organisms associated with the lake, organize them into three trophic groups: producers, consumers, and decomposers.   Separate the consumers into three subcategories: herbivores, carnivores, and omnivores.    Create 3 different food chains found within the lake. Food chain #1 should contain 3 organisms, food chain #2 should contain 4 organisms, and food chain # 3 should contain 5 organisms. The arrows should point in the direction the energy is flowing through the food chain. You can either use the “>” as your arrow or the Insert Symbol function to insert an arrow into your food chains.       As the energy flows through each trophic…

What is the interaction exhibited by the organisms named ants and aphids? a.)mutualism b.)commensalism c.)predation d.)parasitism e.)competition

Under ideal conditions, a population of bacteria can grow to more than 1036 in 24 hours. This is a statement of the populations: a. Density b. Carrying capacity c. Growth rate d. Biotic potential