Dr. Steven Gray ISB

Which is the rarest form of population distribution naturally found in nature?

uniform

Which of the following is unlikely to be a factor in determining the minimum viable population for a specific population?

fire frequency

What are factors that allow humans to increase their natural carrying capacity ?

- Fossil fuel based agriculture

- Habitat destruction

- Advancements in healthcare

Which species' offspring are more likely to survive?

K-selected species

What is an example of top-down regulation?

control of a prey population by a predator

Which species would you often find in areas of primary succession?

moss

When populations diverge, like that of the Arctic fox and the red fox,__________.

speciation may occur

What are ecosystem services?

life-supporting ecological processes

If you enjoy hiking in nature, what type of ecosystem services are you enjoying?

cultural benefits

Which of the following is NOT true of endemic species?

they are less susceptible to extinction than other species

What are threatened species?

species at risk for extinction

In which protected area(s) can you hunt and fish?

both wilderness areas and wildlife refuges

The most well-documented effect of ocean acidification is on ________.

marine calcifiers

Which of the following is NOT a major threat to ocean ecosystems?

plate tectonics

The term for trees that lose their leaves on an annual basis is _________.

deciduous

The three-dimensional structure of the forest refers to the fact that forests __________.

can have multiple layers

What is the main use of grasslands today by humans?

as a food source for large grazing animals

Someone who is malnourished may not be getting an adequate amount of __________ in their daily diet

malnutrition

Industrial agriculture is dependent on

_________.

machinery

What are cash crops?

crops like high quality cotton sold for higher profits than normal

Affluence is best described as ________.

wealth

The concept that everyone should have access to a clean, healthy environment as a basic human right is known as

environmental justice

The lead found in the water in Flint, Michigan, is what type of toxic chemical?

poison

Decades of research show even low levels of lead exposure can impact a child's development in which way?

intellectually, physically, and emotionally

Under the Lautenberg Act, who has to show a chemical is safe before it receives approval to go on the market?

manufacturer

The first step of the scientific process is a(n) __________.

observation

Which of the following questions can be solved with empirical evidence?

What causes the changing of the seasons?

Peer review is ____________.

process by which several selentints in the fleta evaluate envidence in pub

Is this a valid hypothesis? Cancer patients who are prayed for will have better outcomes compared with thoce who don't

Yes

Why do scientists use comparative studies?

Similar phenomena in other species or regions can provide across studies

The specific role a species plays in its community is its ___________.

niche

Which factors must be considered to create an ecosystem?

Limiting factors, like organic matter; animals and plants; and abiotic factors, like streams and soil

Why do ecologists say that Earth is a closed system for matter?

because there are no new inputs of matter, because there is no net loss of matter, because matter cycles in and out of organisms in ecosystems.

The biome that contains the least amount of moisture is a _____________.

tropical scrub

Which of the following could be considered a limiting factor for a species?

pH of the soil, temperature, level of humidity, dissolved oxygen levels in water

When an oak tree undergoes photosynthesis, it is essentially _________.

removing carbon dioxide from the atmosphere

How is Biosphere 2 useful today?

It allows scientists to study the consequences of high CO2 levels

Which of the following are characteristics of a population?

all the same species

interaction between members

live in the same geographic area