Ecosystem and weather questions

Savannas are a type of ______ that has wet and dry seasons.

Different types of ______ and ______ are found in the different layers of a tropical rainforest.

There are ______ and ______ ecosystems.

Oceans are large bodies of ______ water with a high ______.

An ecosystem is made up of a ______ of living organisms that interact with one another and with their ______.

The water in ponds and lakes is usually ______ and the water in rivers and streams is ______.

Tropical ______ are divided into ______ layers.

The ______ is the cover formed by the leaves and branches of tall trees in a forest.

Which of the following is NOT a freshwater ecosystem?

Organisms in the open water ______ actively, ______ of water currents.

Oceans are divided into the ______ and the ______.

Populations of ______ interacting with one another make up a ______.

Oceans are divided into two parts: the ______ and the ______.

ponds, lakes, rivers and streams are ______ ecosystems in which the water has a very low ______.

What does a hygrometer measure?

What is the primary food source for many aquatic animals in a pond?

Tropical rainforests have low rainfall and temperature all year round. (True / False)

Organisms found on the ______ ______ crawl along the ocean floor, burrow into the ocean floor or attach themselves to the ocean floor.

______ rainforests have high rainfall and temperature all year round.

As ______ are hot and very ______ very few plants grow there.