ENV SCIENCE CHP 3 TEST

What are the levels of organization?

Biosphere

Ecosystem

Population

Community

Organisms

Groups of Cells

Cells

Molecules

What’s the biosphere?

All the parts of the Earth that contain all ecosystems

What’s the ecosystem?

Community and nonliving surroundings

What’s a community?

Populations that live together in a defined area

What’s a population?

group of individuals of the same species living in the same area at the same time

What’s a organism?

Individual living things

What’s a group of cells?

Tissue organ, organ system

What’s a cell?

Smallest functional unit of life

What are molecules?

Atoms, smallest unit of chemical compounds 

How old is the earth?

4.6 billion

How old are humans?

100,000 or 200,000 to 300,000

What’s the difference between weathering and erosion?

Weathering - breaks down

Erosion - carries away

What are 2 changes in the lithosphere?

Weathering

Erosion

What are 2 changes in the hydrosphere

El nino and La nina 

Ice Age 

What are 2 changes in the atomsphere?

Photosynthesis

Greenhouse effect

What is the greenhouse effect?

When shortwave radiation leaves the earth. Some waves never reach the earth but some hit the earth and change into longwaves. Longwave radiaiton gets trapped by greenhouse gases. 

What are the needs of organisms?

Water

Food/energy

Living Space

Climate 

What are factors that affect water quality?

Temperature

Nutrients

Dissolved Oxygen

Other chemicals 

What’s dormant?

Growth, development, and activity temporarily stops

What’s hibernation?

Slower heart rate, breathing slows down, temp drops, and animals enter a sleeplike state

What’s a habitat?

Where a particular species lives

It provides all of their needs

How do you calculate biodiversity?

divide the total number of species over the total number of individuals