Lesson 7.5

Question 1

abound on Earth- They biological environments in the planet that are neither created nor altered by humans

Answer 1

NATURAL ECOSYSTEMS

Question 2

NATURAL ECOSYSTEMS can be classified as

Answer 2

terrestrial or aquatic ecosystems.

Question 3

True to their name, enormous amount of rain. receive an

• It is the richest biome in terms of species richness or the number of species.
• Tropical trees stay green all year (evergreen).
• A closer look, however, reveals several layers of trees and conditions that change from one layer to the next.

Answer 3

Rain forest

Question 4

4 layers of a rain forest

Answer 4

Emergent layer
CAnopy layer
Understory layer
Forest floor layer

Question 5

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has the tallest trees that tower above all other plants, control how much light and water reach the lower layers.

Answer 5

EMERGENT LAYER

Question 6

layer beneath the emergent wherein layer trees overlap to form a solid green roof.

Answer 6

CANOPY LAYER-

Question 7

• organisms in this layer have a very difficult environment because only small amount of sunlight reaches them.

Answer 7

UNDERSTORY layer

Question 8

• is dark, and the air is still and quiet. Despite this condition, this layer is still brimming with life.

Answer 8

FOREST FLOOR layer

Question 9

areas where grass is the main type of plant.

Answer 9

Grassland

Question 10

Those in places with alternating hot summers and cold winters are called .

Answer 10

Temperate grasslands

Question 11

Those in places where the climate is hot all year round are called

Answer 11

tropical grasslands

Question 12

Grows in milder climates.

The weather in a temperate forest changes with season.

Answer 12

Temperate forests

Question 13

do have lots of sand, but they also have carpets of flowers, caves, canyons, and strange rock formations that add to their beauty.

Answer 13

Deserts

Question 14

Temperate forests are divided into two categories:

Answer 14

A.Deciduous

B.Coniferous

Question 15

• are home

to deciduous or hardwood trees that shed leaves each winter.

Answer 15

A.Deciduous forests

Question 16

contains evergreen trees that bear cones

Answer 16

A coniferous forest

Question 17

A vast polar plain between taiga and the permanent surrounding the North Pole. ice

Answer 17

Tundra

Question 18

Most of the water on the tundra is permanently frozen in the soil as .

Answer 18

permafrost

Question 19

include oceans, lakes, rivers, streams, estuaries, and wetlands.

Within these aquatic ecosystems are living things that depend on the water for survival, such as fish, plants, and microorganisms.

Answer 19

AQUATIC ECOSYSTEMS

Question 20

• It covers about 70 percent of Earth.
• An estimated 90 percent of all photosynthesis and release of free oxygen take place in the oceans.
• Marine algae and photosynthetic bacteria provide most of the planet’s oxygen needs.

Answer 20

MARINE ENVIRONMENTS

Question 21

• These are the only places where you can easily get fresh waters

Answer 21

FRESHWATER ENVIRONMENTS

Question 22

• 3 Zones of Freshwater

Answer 22

1. Littoral
2. Limnetic
3. Profundal

Question 23

-General name for a kind of ecosystem that develops where freshwater or saltwater and land meet.

Answer 23

WETLAND

Question 24

2 Categories of Wetland

Answer 24

1. Inland
2. Coastal

Question 25

-These are areas where rivers meet and connect to the open sea.

Answer 25

ESTUARIES

Question 26

Despite having plenty of places to explore in the planet, humans still create artificial ecosystem for their own consumption and control

Answer 26

HUMAN-MADE ECOSYSTEM