Point source and non-point source
Primary sources means that it is original article or book created by an individual or sometimes a group of people. What types of primary sources are available? It might be surprising to know that a novel is a primary source. Other types of primary sources are paintings created by the artist. If it were a photocopy of the painting, then it would be a secondary source. Some other primary sources are letters, films, short stories, plays, poems, photographs, court cases, journal articles, newspaper events, and speeches. For instance, a speech by President Bush would be a primary source.
Secondary sources are sources that are written about primary sources. Secondary sources analyze, interpret, and discuss information about the primary source. If a magazine writer wrote about the speech President Bush gave on September 11th, it would be a secondary source. The information is not original, but it is an analysis of the speech.
<span>Classical conditioning relies on stimulating
reflex behavior by means of environmental stimuli. In this problem, Pavlov conditioned the dog to expect food when the tone is sounded. By not presenting the food when the tone is sounded, negative reinforcement happens. </span>
I'm pretty sure the answer is C
<u>The closest relation in a </u><u>phylogeny tree </u><u>is found between </u><u>Annelida</u><u> and </u><u>Arthropoda</u><u>.</u>
What is a phylogenetic tree simple definition?
A phylogenetic tree, also called a phylogeny, is a diagram that shows the evolutionary branches from which various species, creatures, or genes have descended from one another.
What is a phylogenetic tree how is it used?
- A phylogenetic tree is a tool used by scientists to depict the connections and evolutionary paths among organisms.
- A phylogenetic tree is a type of diagram that shows the evolutionary links between different kinds of living things.
Types of Phylogenetic Trees -
- Rooted tree. Make the inference about the most common ancestor of the leaves or branches of the tree.
- Un-rooted tree. Make an illustration about the leaves or branches and do not make any assumption regarding the most common ancestor.
- Bifurcating tree.
- The multifurcating tree.
Learn more about phylogenetic tree
brainly.com/question/13577065
#SPJ4