Ecosystems and Biomes

A snake eats a mouse that eats grass. The snake is a _______________.

• producer

• second-level consumer

• first-level consumer

• decomposer

Tags

NGSS.MS-LS2-3

An organism that can make its own food is called a _________________.

• consumer

• decomposer

• producer

• scavenger

A group of land ecosystems with similar climates and organisms is called a(n) __________________________.

• energy pyramid

• climate

• biome

• food web

Ponds and rivers are two types of ___________________.

• marine ecosystems

• rain forest biomes

• freshwater ecosystems

• estuary ecosystems

Dandelions, horses, and other organisms that were brought by humans from one part of the world to another are examples of _____________________.

• native species

• exotic species

• parasites

• endangered species

The many overlapping food chains in an ecosystem make up a(n) __________________.

• food web

• niche

• energy pyramid

• feeding level

Tags

NGSS.MS-LS2-3

Which biome is extremely cold and dry?

• desert

• tundra

• grassland

• mountains

Bacteria and fungi are known as ______________ because they break down the remains of organisms.

• decomposers

• permafrost

• condensation

• wind

• nitrogen fixation

The soil that is frozen all year in the tundra is called _______________.

• decomposers

• permafrost

• condensation

• wind

• nitrogen fixation

Small, light organisms such as baby spiders can be dispersed by ________________________.

• decomposers

• permafrost

• condensation

• wind

• nitrogen fixation