Chapter(s) 3, 4 and 5

Question 1

Define species

Answer 1

a group of organisms that are so similar to one an other that they can bread and produce fertile offspring.

Question 2

Define population

Answer 2

A group of individuals that belong to the same species and live in the same area.

Question 3

Define community

Answer 3

Assemblages of different populations that live together in a defined area.

Question 4

Define Ecosystem

Answer 4

A collection of organisms that live in a particular place together with their nonliving or physical environment.

Question 5

Define autotroph, consumer, heterotroph, detritivore

Answer 5

Autotrophs use energy from the environment to fuel the assemble of simple inorganic compounds into complex organic Molocuels. They make their own food and are called producers.
Heterotroph: Organisms that rely on other organisms for their energy and food supply.
Consumer: Heterotrophs
Detritovers: Are mites earthworms snails and crabs they feed on plant and animal remains and other dead matter.

Question 6

Define biomass

Answer 6

The total amount of living tissue in a given trophic level.

Question 7

List the three processes that occur in the carbon cycle.

Answer 7

respiration of co2 and volcanic eruption go into atmosphere….
Plants take the co2 and make food for humans and animals to eat.
Then we pass and then it decomposes and is brought back into the atmosphere.

Question 8

Define ecology

Answer 8

The study or interactions among organisms in between organisms and their environment or surroundings.

Question 9

Define biosphere

Answer 9

Part of earth in which life exists including land, water and atmosphere.

Question 10

Define herbivore, omnivore, carnivore, detritivore

Answer 10

Herbivore: eats only plants
Carnivore: meat
Omnivores: Plants and animals
Detritivores: Feed on dead matter

Question 11

Define a food web

Answer 11

A food web links all the food chains in an ecosystem together.

Question 12

Describe the water cycle

Answer 12

1. Water evaporates
2. Water condensates in clouds
   3.Water falls as precipitation
   ……..Runoff, Seepage and root uptake and the restart

Question 13

Define niche. How can similar organisms live in the same niche.

Answer 13

Niche is a full range of physical and biological condition in which an organisms lives and the way in which the organism uses those conditions. Bull frogs live near ponds and fish live near ponds for the reason they obtain food.

Question 14

Define abiotic. List 3 abiotic factors

Answer 14

Abiotic: Nonliving

1. temp
2. wind
3. sunlight

Question 15

Define the greenhouse effect

Answer 15

Natural situation in which heat is retained in earth’s atmosphere by co2, methane, water vapor and other gasses.

Question 16

Define symbiosis , mutualism, commensalism, parasitism

Answer 16

.

Question 17

Define exponential growth and logical growth. What countries are experiencing.

Answer 17

.

Question 18

What factors cause population growth and change.

Answer 18

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Question 19

Define biomagnification

Answer 19

.

Question 20

Define emigration, immigration, death rate and demography.

Answer 20

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Question 21

Major cause of O-zone depletion.

Answer 21

Global worming.