Answer:
C. Traits present in the last common ancestor of a certain group of species under consideration.
Explanation:
Ancestral character traits are the one that is present in the last common ancestor and all of its descendant groups. For example, the presence of the vertebral column is an ancestral trait for all the vertebrate groups such as birds and mammals as it was present in their last common ancestor and is also shared by them.
I believe the correct answer from the choices listed above is the second option. In areas where the Earth’s surface is saturated with water, earthquakes can turn solid ground into a fluid through <span>Liquefaction. Hope this answers the question. Have a nice day.</span>
Answer:
b. Neither the researchers nor the study participants know who is receiving the drug and who is receiving the placebo.
Explanation:
In a double-blind test, there are two groups of participants: (1) people who are receiving the new drug and (2) people who are taking a placebo. Neither people from group (1) nor people from group (2) know what they are taking. Also, researchers recollect data from theses groups without knowing which person belongs to each group to avoid any "favoritism" caused by expected results.
Answer:
The cell membrane has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
Explanation:
Answer:
Unlike lighters, matches are made from wood or paper, which is easily biodegradable. Because they are biodegradable, they won't contribute to the growing waste problem in the world. The most common type of wood matches are made from aspen or white pine. Each tree can create hundreds of thousands of match sticks.
Explanation:
