Ecosystem, Biomes and Biogeochemical Cycles

What organisms break down dead animals and other biological waste and

release them as inorganic molecules back into the environment?

• autotrophs

• heterotrophs

• decomposers

• saprotrophs

Which of the following is referred to as a hot, humid biome found  near the Earth’s equator? 

• desert

• deciduous forest

• coniferous forest

• tropical rainforest

 Which of the following is the other name for boreal forest?

• taiga

• tundra

• desert

• grassland

Which is known as the "lungs of the sea"?

• freshwater ecosystem

• forest ecosystem

• coral reef

• seagrass ecosystem

What ecological relationship is shown in the picture?

• commensalism

• competition

• amensalism

• mutualism

What ecological relationship is shown in the picture?

• commensalism

• competition

• mutualism

• amsensalism

Tags

NGSS.MS-LS2-2

All living things is made up of

• carbon

• nitrogen

• sulfur

• all elements

What element is an essential component of DNA and RNA?

• carbon

• oxygen

• phosphorus

• sulfur

Tags

NGSS.MS-LS3-1

It is the most abundant element in the human body.

• nitrogen

• oxygen

• carbon

• hydrogen

What process occurs when autotrophs break down glucose in order to

get the energy they need for their growth?

• photosynthesis

• cellular respiration

• chemical reaction

• digestion

Tags

NGSS.MS-LS1-7