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What is 1 + 3?
A disease resulting in the deaths of one-third of a dense population of bats in a cave would be a?
Density-Dependent limiting factor
What occurs in a population as it grows?
The birthrate becomes higher than the death rate.
Which would be least likely to be affected by a density-dependent limiting factor?
A small, scattered population
The general place where an organism lives?
Wolves and a caribou herd.
Dramatic decrease in methane, H2O vapor, and CO2
Global temperature decrease
How an organism interacts with it's habitat
most rainfall from november through april. none in july and august
temperate woodland and shrubland biome
where freshwater rivers, and salt water mix and intermingle
Most rainfall and highest temperatures June, July, and August. With abundant coniferous forests
boreal forest biome
wolf feces (poop) and the Arctic Tundra
break down rock into soil
Contains the benthic environment
open ocean aphotic zone
Hot and wet all year around. Nutrients poor, thin soils
Tropical rain forest biome
climate is caused by:
Fleas living upon a wolf.
Ending ecosystem in succesion
The repeated movement of water between Earth's surface and the atmosphere is called
The water cycle
The human population experienced exponential growth after
the industrial revolution began.
When organisms move out of the population they were born in, is known as?
A water molecule is polar because there is an uneven distribution of electrons between the oxygen and?
The number of organisms that an environment can support over a relatively long period of time is called?
What is happening in a population as it decreases?
The death rate becomes higher than the birthrate.
Which of the following describes how fast the human population is growing?
Under ideal conditions with unlimited resources, a population will grow?
When organisms move into a given area from another area, what is taking place?
Which factor might NOT contribute to an exponential growth rate in a given population?
Only 10 percent of the energy stored in an organism can be passed on to the next tropic level. Of the remaining energy, some is used for the organsim's life processes and the rest is
Eliminated as heat
Water lilies do not grow in desert sand because water availability to these plants in a desert is
a limiting factor
A controlled experiment allows the scientist to isolate and test
a single variable
Lipids are important parts of biological membranes and waterproof coverings? True or false?
Which of the following is a density-dependent factor? Immigration,emigration,earthquake, disease
If immigration and emigration numbers remain equal, which is the most important contributing factor to a slowed growth rate?
A biotic or an abiotic resource in the environment that limits the size of a population is a
If an entire wolf population dies, the moose population on which it preys will grow to the enironment's
How many cntimeters are there in 2.4 km?
The process by which organisms keep their internal conditions relatively stable is called?
ill or bad
to cut off.
A snake that eats a frog that has eaten an insect that fed on a plant is a
The movement of individuals out of an area is emigration? true or false
When individuals in a population reproduce at a constant rate, it is called?
Emigration can cause a population to ___ in size?
Which are two ways a population can decrease in size?
decreased birthrate and emigration
Amino acid is to protein as
simple sugar is to starch
water is the greatest solute in the world? true or false
Organisms that break down organic matter and return it to the environment are called?
plant-eating animals such as cows are called?
Primary succession can begin after?
A lava flow
A lake that is protected from receiving the runoff from a cultivated field is more likely to remain a healthy ecosystem? true or false
The elements or compounds produced by a chemical reaction are known as?
a monosaccharide is a?
Enzymes affect the reactions in living cells by changing the
speed of the reaction
the variable that is deliberately changed is called the responding variable? true or false?
a covalent bond is formed as the result of
sharing an electron pair
what type of bond is formed when an atom loses electrons?
what does not require sunlight to live?
which of the following descriptions about the organization of an ecosystem is correct?
species make up populations, which make up communities
In which way are green plants in a sunny mountain meadow and sulfur bacteria in a deep-sea volcanic vent alike?
They both produce carbohydrates and oxygen
The lowest level of environmental complexity that includes living and nonliving factors is the?
A like that is protected from receiving the runoff from a cultivated feild is more likely to remain a healthy ecosystem? true or false
some autotrophs obtain their energy from hydrogen sulfide to produce carbohydrates? True or false
an organism that cannot make its own food is called?
all wolves, mice, and caribou in the arctic
bottom of the ocean
that will germinate
all the wolves in the artic
nucleus of a cell
towards the body
group of communites