Stemscopedia: Interaction of Organisms and Earth's Systems

Cyanobacteria built ancient coral reefs known as

• Stromatolites

• Reef Buds

• Reeflets

• Coral

Species or systems that affect how each other develop over time are undergoing

• symbiosis

• competition

• coevolution

• parasites

An example of a pioneer species is a __________

• bear

• racoon

• lichen

• pine tree

When one factor causes another factor, it is called a–

• correlational effect.

• positive feedback

• negative feedback.

• causal effect

When there is a relationship between two factors it is called a–

• correlational effect.

• positive feedback

• negative feedback.

• causal effect

Growing arctic ice sheets is an example of–

• correlational effect.

• positive feedback

• negative feedback.

• causal effect

Increasing cloud cover is an example of–

• correlational effect.

• positive feedback

• negative feedback.

• causal effect

How did lichen help creation of soil?

• By pooping regularly in the same spot

• by breaking down rocks

• by altering the way the soil smelled

HOW DID Oxygen help the process of evolution?

• Life forms that could use oxygen became more efficient

• oxygen created the ozone layer to shield the earth from harsh sunlight

• both of the above are true

lichen is a relationship between

• Algae and Fungi

• Moss and Bacteria

• Plants and Rocks

• Mold and Moss