S3U4L1 - Ecosystems and Interactions

Ecosystems and Interactions

S3U4L1

Multiple Choice

You may have heard someone talk about the population of your city or province. What do you think the word “population” means when used this way?

• the number of people living together in one area

• a flock of animals

• the number of pens in a basket

• a ratio and proportion

Population

• When talking about the population of a city or province, population means the number of people living together in one area.

• say for example the population of people living in Minglanilla.

• Or if used in a sentence: The population of stray cats in Campbell Academy Foundation Inc. has increased during the COVID pandemic.

Multiple Choice

The place where plants and animal lives is called _____

• population

• habitat

• community

• ecosytem

Multiple Choice

all the living

and nonliving things in a places is called _____

• population

• habitat

• community

• ecosytem

Multiple Choice

Your neighborhood is an example of a _____

• population

• habitat

• community

• ecosytem

Multiple Choice

all of one kind of organism living in the

same area is called _____

• population

• habitat

• community

• ecosytem

Open Ended

You may have seen pictures of a desert or even visited one before. What do you know about the characteristics of a desert?

Deserts are dry places that are often hot. There might be sand on the ground, and cacti growing in the area. Lizards, snakes, and vultures also live in the desert.

The Great Barrier Reef

Multiple Select

Besides fish, what other kinds of animals live in a coral reef?

• Corals,

• jellyfish,

• crabs,

• sea urchins

Coral Reef

• Corals, jellyfish, crabs, sponges, turtles, and sea urchins are some of the many living things that live in a coral reef.

How is a coral reef formed?

• A coral reef is made of the skeletons of millions of tiny animals called corals.

• When a coral dies and leaves its skeleton behind, newer corals build their skeletons on top of it.

• Over time, the many skeletons form a huge structure with living corals on the outside.

Multiple Select

Where in the ocean are you most likely to find a coral reef?

• warm water

• shallow water

• clear water

• warm, shallow, clear ocean water

• Coral reefs are found mainly in warm, shallow, clear ocean water.

• The water must be clear and shallow, not cloudy or deep, so that sunlight can reach the corals.

• Corals need sunlight to survive.

Forest Ecosystems

Open Ended

Besides deer, what other populations might live in a forest?

Besides deer, what other populations might live in a forest?

• Other populations you might find in a forest include squirrels, foxes, chipmunks, owls, ants, oak trees, ferns, and mosses.

Multiple Select

Can a deer and a rabbit be part of the same population?

• Yes

• No

• No, a deer and a rabbit cannot be part of the same population.

• A population is all the same kind of organisms that live in the same area.

• A deer is a different kind of organism from a rabbit.

Multiple Select

Can a deer and a rabbit be part of the same community?

• Yes

• No

Yes, if a deer and a rabbit lived in the same forest ecosystem, they would both be part of that forest’s community.

A community is all of the organisms that live in the same place at the same time.

Land Habitats

In what ways are deserts and tundra alike and different from each other?

• Deserts and tundra are alike because they are both very dry.

• Neither of them gets very much rain. Also, both deserts and tundra provide harsh conditions for the plants and animals that live there.

• There are differences between the two. The tundra is much colder than a desert and parts of it stay frozen all year long.

• Deserts experience extreme temperature changes: sometimes they are very hot, and sometimes they become very cold. 

Open Ended

Because a desert is so dry, how do plants get the water they need to survive?

• Many desert plants store water to use when the weather is dry.

• Some desert plants have shallow roots that can quickly absorb rainwater.

• Some desert plants only appear after it rains.

Why would the rain a rain forest gets every day make the air feel sticky and damp?

• When it rains, the air takes up water vapor.

• It rains so much in a rain forest that there is a lot of water in the air.

• When the air is holding nearly all the water it can hold, we can feel it on our skin as dampness or stickiness. This is called humidity.

Multiple Select

Do camels store water in their humps?

• Yes

• No

• No, camels do not store water in their humps. A camel’s hump is made of fat. When food is scarce, a camel’s body can use the fat as a source of energy so that the camel can do without food for weeks.

• Although camels can drink quite a lot of water at one time, scientists do not think camels store water anywhere in their bodies. Camels are just very good at surviving without water for long periods.

End of Presentation