Feedback
Changes to the biosphere that lead to changes in another Earth system are known as what? (Page 77)
What are feedback mechanisms.
The interaction between organisms and Earth's systems leads to what? (Page 77)
What is coevolution.
In this type of relationship there is a strong relationship between two factors. (Page 78)
What is correlational.
Early materials that would later form planets are known as what? (Page 79)
What are planetesimals.
What is 7
There are two types of feedback mechanisms known as what? (Page 77)
What are positive and negative feedback.
A relationship between two organisms in which they both benefit is known as what? (Page 81)
In this type of relationship, one factor directly causes the other. (Page 78)
What is causal.
What is erosion.
The pH scale ranges from 0-14. Acidic substance ranges between what two values on the pH scale?
What are 0-7.
This type of feedback mechanism tends to return a situation to its original state. (Page 78)
What is negative feedback.
What organism is responsible for producing enough oxygen to change the composition of the atmosphere? (Page 80)
What is cyanobacteria.
Shark attacks and ice cream sales both increase over summer. Is this an example of a correlational relationship or a causal relationship? (Page 78)
What is correlational.
Today, Earth's atmosphere is partially made up of ______% of oxygen. (Page 79)
What is 21%
Pure water has more than just H2O molecules in it. What two other things can you find in pure water besides water molecules?
What are hydrogen ions and hydroxide ions
If someone eats a lot of sugar, then the sugar (glucose) level in their blood will rise (which can be dangerous). When our blood sugar levels are above normal range, our bodies release insulin to absorb the extra sugar in our blood. This is an example of what type of feedback?
What is negative feedback.
This organism is made of algae and fungi working together to support each other. The algae get protection from the fungi and the fungi get food from the algae. (Page 81)
What is lichen.
Within a correlational relationship, sometimes there are variables that are responsible for the changes being observed. What are these variables known as? (Page 78)
What are lurking variables.
Water vapor was the largest component in the atmosphere until Earth cooled causing that water vapor to do what? (Page 79)
What is condense and fall out of the atmosphere as precipitation (rain), forming the oceans.
Substances that are basic on the pH scale have an excess (extra) amount of this type of ion.
What is a hydroxide ion.
When we suffer from a cut and start to bleed, our blood will start to clot. To do this, platelets in the blood will cling to the injured sight and release chemicals that attract more and more platelets. This is an example of what type of feedback?
What is positive feedback.
When lichen die, they mix with the sediment to create rich organic soil from rock. What group of organisms evolved as a result of the transformation of rock into soil. (Page 82)
What are land plants.
Our society is increasing the amount of carbon dioxide that is going into the atmosphere. A lot of that carbon dioxide get dissolved in the ocean. As that happens, there has been a decrease in the amount of calcium carbonate available for organisms in the ocean to use. Is this a correlational or causal relationship?
What is a causal relationship.
Layers of sedimentary rocks that serve as the earliest fossil evidence and became the Earth's first coral reefs are known as what? (Page 80)
What are stromatolites.
When we measure the pH of a substance, what are we actually measuring?
What is the ratio between hydrogen ions and hydroxide ions.