Science 1.4-7

How do Invasive Species succeed in a new environment

-Nothing controlling it

highly competitive

Unchecked population

Niche fits ecosystem

How do you control an invasive specie

Chemicals (pesticides)

Mechanical (physical borders)

Biological (release insects to prey on them)

Problems caused by invasive species

alters energy flow cycles

Effects beauty of ecosystem

Damaging agriculture

Spreads diseases

Invasive species compared to non native

Invasive species impact the environment negatively

Non native species don’t naturally occur in an environment

Difference between bioaccumulation and biomagnification

bioaccumulation is the build up in a singular organism

Biomagnification is the increase in toxins progressing through the food chain

What is A,B, and C

A is the slow population growth

B is the rapid population growth

C is the steady population growth

Is the time the dependant variable or the independent

Time is the independent variable because no matter what happens, time keeps flowing

What is the carrying capacity

The limit of species in an ecosystem

How do we know we’ve reached the carrying capacity

• Over competition

• Over crowding

How can you alter the carrying capacity

• Adding or removing resources

• Adding or removing species

What is the difference between tolerance and optimal

Tolerance is how much a organism can handle

Optimal is the ideal environment to survive

What are some A-biotic factors

light

Water

Nutrients

Weather

Acidity

What are some biotic factors

• Biotic interactions (predation, parasitism, competition, and mutualism)

What is a natural ecosystem

not man made

Forests ponds

Sustainable

Requires no maintenance

What is an artificial ecosystme

Man made

Not sustainable

Farms gardens

Requires maintenance and management

What can affect a plants health

Soil quality

Water quality

Access to nitrogen

What are the three layers of soil

Top soil (rock particles and organisms

Sub soil (little organism matter)

Bedrock (water can’t pass, sits on top *water table)

What is the PH Scale

7 is neutral

To the left of 7 is acid

To the right of 7 is base

The further away from 7, the more acidic or bad it is

Battery acid is 0, bleach is 13

What is overexplotiation

Overing using a resource

Ie. overfishing and fresh water

What is crop rotation

Planting certain crops based on the time

What are 3 ways urban forests are sustainable

Removes carbon

Provides shade consuming less energy

Maintains soil quality

What is sustainability

Being able to maintain ecological balance, ensuring enough resources for the future

What would happen if all producers were removed from the food chain

Producers use light energy from the sun to create chemical energy using the process of photosynthesis. Without chemical energy from the producers, primary consumers cannot survive, Without chemical energy from the producers, primary consumers cannot survive.

what is population growth curves

its how population organisms in an ecosystem change over time

meaning of biodiversity

a range of species that remain plentiful

acidity

any substance that is added to the environment that produces a condition that is harmful to organism

point source pollution

pollution that enter water sources at specific places

non-point source pollution

pollution that enters water sources indirectly