The correct answer are valves. As lymphnodes become larger and deeper they turn into lymph vessels that develop one-way valves. These valves prevent the back flow of blood throughout the vessel and ensure that the lymph only flows in one direction.
Prokaryotes are identified with bacteria: most live as single-cell organisms but some bacteria associate in a chain. Prokaryotes have their DNA in the cytoplasm of the cell. Eukaryotes ("Eu" for true) have a nucleus, a compartment separated from the rest of the cellular content, which contains the DNA.
In both of eucaryotic an procaryotic cell, you can find DNA, all kinds of RNA, Cytoplasm, ribosomes, and a cell membrane,
In procaryotic cell only you can find: a cell wall (located outside the cell membrane), you may find also pili, capsids, plasmids, and flagella.
In a eucaryotic cell only, you can find Nucleus (which contain the DNA), mitochondria, endoplasmic reticulum,
The thing that the data suggest about the effect the oil spill had on pink salmon is option d. Pink salmon populations seemed to be minimally affected.
<h3>What is Pink salmon?</h3>
Pink salmon is called humpback salmon and it is known to be a fish and it is said to be a species that belongs to the anadromous fish that is seen in the salmon family.
Note that form the image attached, The thing that the data suggest about the effect the oil spill had on pink salmon is option d. Pink salmon populations seemed to be minimally affected.
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The correct answer is C. Political Science.
Political Science refers to the field of study that deals with systems of government and the analysis of political activity and behavior. It studies the way human cultures govern and make laws. It includes all laws even about the environment.
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D base because the salt and acid form bases they are both ionic
