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Question 1

Energy pyramid

Answer 1

A model that shows the available amount of energy in each trophies layer in an ecosystem

Question 2

Food chain

Answer 2

a model that shows one feeding relationships

Question 3

Food web

Answer 3

A model that shows many different feeding relationships among other living things

Question 4

Producer

Answer 4

Producers are organisms that make their own food; they are also known as autotrophs. They get energy from chemicals or the sun, and with the help of water, convert that energy into useable energy in the form of sugar, or food. The most common example of a producer are plants.

Question 5

Consumer

Answer 5

a person or thing that eats or uses something.

Question 6

Biome

Answer 6

a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra.

Question 7

Ecology

Answer 7

the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.

Question 8

Nitrogen cycle

Answer 8

A nitrogen cycle is a cycle that contains nitrogen

Question 9

Water cycle

Answer 9

the cycle of processes by which water circulates between the earth’s oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.

Question 10

Carbon cycle

Answer 10

the series of processes by which carbon compounds are interconverted in the environment, chiefly involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.

Question 11

Biotic factors

Answer 11

All living things

Question 12

Abiotic

Answer 12

Non living things

Question 13

Predator

Answer 13

an animal that naturally preys on others.

Question 14

Prey

Answer 14

an animal that is hunted and killed by another for food.

Question 15

Succession

Answer 15

a number of people or things sharing a specified characteristic and following one after the other.

Question 16

Levels of organization

Answer 16

These parts are divided into levels of organization. There are five levels: cells, tissue, organs, organ systems, and organisms. All living things are made up of cells. … Cells are the simplest level of organization.

Question 17

Lab safety rules

Answer 17

Report all accidents, injuries, and breakage of glass or equipment to instructor immediately.
Keep pathways clear by placing extra items (books, bags, etc.) on the shelves or under the work tables. …
Long hair (chin-length or longer) must be tied back to avoid catching fire.
Wear sensible clothing including footwear.

Question 18

Metric system

Answer 18

the decimal measuring system based on the meter, liter, and gram as units of length, capacity, and weight or mass. The system was first proposed by the French astronomer and mathematician Gabriel Mouton (1618–94) in 1670 and was standardized in France under the Republican government in the 1790s.

Question 19

Dependent variable

Answer 19

The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment

Question 20

Independent variable

Answer 20

a variable (often denoted by x ) whose variation does not depend on that of another.

Question 21

Constant variable

Answer 21

It is the control variable, also known as the constant variable. As the name suggests, it is the variable that the scientist wants to remain the same. Often, there is more than one control or constant variable in a scientific experiment

Question 22

Hypothesis

Answer 22

a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.