Page 30 - Science Course 3 (Book 1)

Mo1-L3a: What are the Types of Mo1-L3b: What are the Types of Aquatic
Freshwater? Ecosystems?

Runoff from farms, gardens, and roads wash What are the Types of Aquatic
pollutants into ponds and lakes, disrupting food webs. Mo1-L3b Ecosystems?

KEY CONCEPTS:
1. How do humans impact aquatic ecosystems?

Vocabulary A-Z

Let us learn some vocabulary

Estuary
a coastal area where freshwater from rivers and
streams mixes with salt water from seas or oceans.

Key Concept

What are the Types of Freshwater?

How do ponds and lakes differ?

SUMMARY
Intertidal Zone
What are the Types of Freshwater?
the ocean shore between the lowest low tide and the
highest high tide.
Freshwater ecosystems include
ponds and lakes.

Wetlands Coral Reef
an aquatic ecosystem that has a thin layer of water an underwater structure made from outside
covering soil that is wet most of the time. skeletons of tiny, soft-bodied animals called coral.

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