Lesson 1
what is a living part of an ecosystem?
biotic factor
What is one of Earth's large ecosystems with its own kind of climate, soil, and living things called?
biome
the food chains that overlap in an ecosystem
food web
What is a non-living part of an ecosystem?
abiotic factor
An ecosystem where ocean water and freshwater meet is called ______________.
an estuary
what is the living and nonliving things in an environment and all of their interactions?
ecosystem
A savanna is a __________ with _______ and few trees.
grassland / shrubs
Why an herbivore must eat a lot to stay alive?
1. The world's largest desert is the Sahara in Asia. (T/F)
2.Desert biomes have dry and thin soil. (T/F)
3. Every country has at least one desert. (T/F)
1. F (Sahara is in Africa)
2. T
3. F (Every continent)
What is the study of how biotic and abiotic factors interact?
ecology
What are abiotic factors? (Name three)
water, soil, climate
Taiga is the _________ word for "___________".
Russian - forest
1. Decomposers return substances to the ecosystem as wastes. (T/F)
2. Competition is limited to only animals. (T/F)
3. Ospreys are carnivores. (T/F)
1. F (They make nutrients)
2. F (It also happens to plants and between individuals)
3. T
Why do algae live near the ocean's surface?
Because they need enough sunlight to grow.
Place the order in an energy pyramid from the top to the bottom. [THREE PARTS]
(producers / carnivores / herbivores / omnivores )
omnivores,carnivores - herbivores - producers
Give out one example of a habitat in a forest ecosystem.
The logs provide a habitat for frogs.
What are the two wetlands that are estuaries?
Is estuaries freshwater ecosystem?
salt marshes / mangrove swamps
NO
How many ways do the food chain show?
The energy in a food chain moves from __________ to __________.
one path
producers / consumers
Which ecosystems tend to outnumber the communities;
cold or dry ecosystems or warm ecosystems ?
Warm ecosystems tend to outnumber those in cold or dry ecosystems.
1. Tundra is a cold,dry biome with trees. (T/F)
2. Deciduous forest biome may be the most familiar to people. (T/F)
3. Taiga biomes are closer to the ________.
4. Tropical rainforest is near the ________.
1. F( (Tundra has no or few trees)
2. T
3. poles
4. equator
What do scientists look at when they want to know about an ecosystem?
They look at populations and communities.
Plants in the tundra have ________ roots that help them get water from ___________ snow.
Tundra plants include wildflowers, _______, and grasses.
Tundra animals, such as _________ and musk oxen have an extra layers of ______ that keeps them warm.
shallow / melting / mosses / caribou / fat
1. Explain what happens when a mayfly eats the algae.
2. How does a mayfly use the energy it gains from eating the algae? Mention TWO ways.
1. An insect uses oxygen to release the energy stored in the algae it ate.
2. It uses energy to move / grow / eat.
Also it stores energy in its tissue.
Classify them into herbivores, omnivores, and carnivores.
(opposoms / ospreys / porcupines / raccoons)
omnivores - opposoms, raccoons
carnivores - ospreys
The size of a community depends on ________, ________ and ________.
food / shelter / light