Earth's History
Which of these provides the BEST evidence that the distribution of Earth’s oceans has changed over time?
What is? Marine fossils found on land masses.
What step in the water treatment process involves the removal of sediment?
What is? filtration
When moist air comes in contact with a cold surface in the winter, one result can be frost. When is the process that occurs when water vapor in the air turns to frost.
What is? Deposition.
How are bacterial cells and human cells alike.
What is? They allow nutrients thought the cell membrane.
Iron-rich deposits that formed about 2 billion years ago have red layers. Layers formed before then were not red. The red layers formed when oxygen made during photosynthesis reacted with iron molecules in the ocean. The oxidized iron formed layers of sedimentary rock. Which BEST summarizes this phenomenon?
What is? The biosphere change the lithopshere.
The environmental Protection Agency was assigned which task?
What is? Setting standards and governing the cleanliness of water used by Americans.
Which represents a short-term storage for carbon?
What is? carbohydrates stored in fruits and vegetables
Which technology enables doctors to monitors the function of the heart?
What is? Electrocardiogram
Scientists can use relative dating, absolute dating, or a combination of the two techniques to determine the age of a fossil. Which of the following could be determined using both methods?
What is? which of two fossils is the older
Which best explains why water quality standards have been created ti ensure heavy metals in water and kept to a minimum?
What is? Heavy metals are linked to toxicities in humans and large amounts of heavy metals as should not be consumed.
Which of the following sentences BEST explains what happens when puddles evaporate?
What is? The water changes from one form to another.
Which energy transformation occurs during active transport in a cell?
What is? Chemical energy -> mechanical energy
A fossil discovered in Colorado dates from the early Mesozoic era. A year later a similar fossil is found in Wyoming that also dates from the early Mesozoic era. These two organisms most likely lived in
What is? The same environment at about the same time.
Which best explains a way of protecting water for humans consumption?
What is? Improve water quality standards for industries located on lakes and rivers.
Which is the BEST example of a community responding to an external factor?
What is? Plants and animals thrive on the forest floor after the fall of a white pine causes an opening canopy.
Tobacco has been linked to many health problems. What is the most complete list of forms of tobacco that causes cancer?
Which of the following eras is known as the “Age of Mammals”?
What is? Cenozoic
Cholera is a bacterial disease that is spread throughout a community by contaminated water. How can the spread of cholera be prvented.
What is? By using chlorine to treat sewage before it enters the water supply.
Water is less dense as a solid than as a liquid. How does this property typically affect a lake ecosystem in freezing temperatures?
When the lake is frozen, fish still have access to liquid water for oxygen and swimming as well as access to food on the bottom of the lake.
Both prokaryotes and eukaryotes have small, free-floating organelles. The cell makes these organelles from nucleic acids and amino acids found in food. Without these organelles, the cell could not make proteins. what are these organelles called?
What is? Ribosomes.