Upload
mschenteaches
View
439
Download
2
Tags:
Embed Size (px)
Citation preview
Greet Ms. Negreros at the door!Class starts in…
5 minutes
Warm Up is on p.7!
Learning Target: IWBAT describe biomagnification.
Greet Ms. Negreros at the door!Class starts in…
4 minutes
Warm Up is on p.7!
Learning Target: IWBAT describe biomagnification.
Greet Ms. Negreros at the door!Class starts in…
3 minutes
Warm Up is on p.7!
Learning Target: IWBAT describe biomagnification.
Greet Ms. Negreros at the door!Class starts in…
2 minutes
Warm Up is on p.7!
Learning Target: IWBAT describe biomagnification.
Greet Ms. Negreros at the door!Class starts in…
1 minutes
Warm Up is on p.7!
Learning Target: IWBAT describe biomagnification.
Class has started!
Warm Up is on p.7!
Learning Target: IWBAT describe biomagnification.
Your learning target should be written down…
You have
3Minutes left
Warm Up is on p.7!
Learning Target:
•IWBAT describe biomagnification.
Homework:
Study!
You should be working on the warm up…
You have
2Minutes left
Warm Up is on p.7!
Homework:
Study!
Learning Target:
•IWBAT describe biomagnification.
If you finish early, you should sit quietly…
You have
1Minute left
Warm Up is on p.7!
Homework:
Study!
Learning Target:
•IWBAT describe biomagnification.
Let’s get started!
Tutorials: After school
Warm Up Review1. In the nitrogen cycle, what is the role of bacteria that live in the roots of legumes?
a. change nitrogen gas into proteins that can be used by plantsb. change nitrogen gas form the atmosphere into ammonia and
ammonium ionsc. break down nitrogen compounds in the soil into nitrogen gasd. convert nitrate ions into ammonium ions
2. Which of the following statements about the nitrogen cycle is true? a. Although nitrogen is the most abundant atmospheric gas, plants cannot use it from the air. b. Adding man-made fertilizers to farm fields will take needed nitrogen from the cycle. c. The occurrence of lightning takes extra nitrogen molecules from the atmosphere and the cycle. d. Bacteria located in the soil trap excess atmospheric oxygen and help it enter plant roots.
90
KEY points
• Biodiversity is the variety of all life• Humans have a BIG impact on the biosphere• Biomagnification increases the chemicals
present at higher feeding levels
60
KEY points
• Biodiversity is the variety of all life• Humans have a BIG impact on the biosphere• Biomagnification increases the chemicals
present at higher feeding levels
KEY points
30
• Biodiversity is the variety of all life• Humans have a BIG impact on the biosphere• Biomagnification increases the chemicals
present at higher feeding levels
20
KEY points
• Biodiversity is the variety of all life.• Humans have a BIG impact on the biosphere.• Biomagnification increases the chemicals
present at higher feeding levels.
KEY points
10
• Biodiversity is the variety of all life.• Humans have a BIG impact on the biosphere.• Biomagnification increases the chemicals
present at higher feeding levels.
How Human Activities Affect Ecosystems
• Humans are part of Earth’s biodiversity – BIODIVERSITY= the variety of all life
• Human actions can greatly affect Earth’s biological, physical and chemical processes. – Natural Resource= part of the environment that is
used by humans or other organisms. • Earth’s supply of many natural resources is
limited and people sometimes use more of a resource than they actually need. – Examples: land, water, and air
Examples of how humans affect ecosystem
• Deforestation= removal of all trees in a forest– Destroys habitat, forcing species
to move out of the area reduces biodiversity
– Removing Key Stone Species= species that determines the community
• Pollution= release of harmful substances or energy into air, soil, and water
Examples of how humans affect ecosystem
• Global Warming= increase in average temperatures
• Pesticides can also harm the environment. – Can make an ecosystem
unstable by sickening or killing animals other than those
A little more about Pesticides…
• Sometimes, pesticides eaten by one organism are passed on to other organisms through the food chain.
• If a pesticide does not kill an animal that consumes it, it may be stored in the organism’s tissues.
• These pesticides are passed on to predators that eat the first animal.
bioMAGNIFICATION• Biomagnification= the
process in which chemicals become more concentrated at higher feeding levels.
Human Activities that Help the Environment
• Drive fuel efficient cars • Buy energy efficient appliances• Plant only native species in gardens• Use less paper• Use less water for washing, lawns• Grow and buy organic food• Eat only sustainably harvested fish
CLASSWORK
• Pages 10-11 must be finished in class!