According to Twain man could not have ascended from lower animals (Darwin theory of evolution) because man makes cruel and horrible decisions, rather man descends from Higher animals. He proved his conclusions about man by using specific scientific method, he subjected every postulate itself to the crucial test of actual experiment and have adopted it or rejected it according to the results.
The correct answer is B. competitive exclusion.
This law refers to the fact that it is nearly impossible for two species to exist in the same place at the same time together, if they are interested in the same resources. If both species need the same thing to survive, one will have to be stronger while the other one will dwindle in number.
Innate behaviors are behaviors that do not need to be taught, you naturally develop them. Some examples are eating and sleeping.
The four learned behaviors: Habituation, Sensitization, Imprinting, and <span>The Conditioned Response.
</span><u>Habituation </u>- Turtle hides into shell after being touched. After being touched several times and has associated that no danger is involved, turtle is no longer scared.
<u>Sensitization</u><u /> - Your first presentation may make you insanely nervous, but once you gain more experience you become less and less nervous.
<u>Imprinting</u><u /> - Ducklings following their mother
<u>Conditioned Response</u><u /> - Dogs don't like getting shots. They may associate the scent or appearance of the animal hospital with getting shots. They may try to avoid the scent or something similar to the hospital.
Hope this helped! :)
Answer:
antigens
Explanation:
Specific immune responses are triggered by antigens. Antigens are usually found on the surface of pathogens and are unique to that particular pathogen. The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies.
