The correct answers are as follows:
1. A.
There are basically two types of succession, they are primary and secondary succession. Primary succession refers to the type of succession that occurs in new and bare areas where the soil present is unable to sustain the growth of plants. An example of primary succession area is an area with sand dunes that is freshly formed. Primary succession usually occur over a long period of time. Secondary succession is a type of succession that occur on a land which was disturbed by hazardous events such as fire outbreak, flood, etc. Secondary succession occurs much faster than the primary succession.
2. D
There are two types of factors that affect any particular ecosystem, these are abiotic and biotic factors. The abiotic factors refers to non living factors such as temperature, relative humidity, rainfall, etc. while the biotic factors refer to the living factors. Looking at the options given above, one will see that only option D has living factor, which is predators. All other options have abiotic factors.
<span>The water plants
contain DDT or dichlor-diphenyl-tricloroehane was developed in the 1940s as an
insecticide. Because of its availability, it is inexpensive, has a high rate of
longevity and can readily be produced that is why it is mostly used as the main
ingredient. However, the manufacturing of this product has stopped due to the effects
that it has on humans and other organisms. It can accumulate in plants and can
destroy fatty tissues in organisms.</span>
A psychological disorder or a mental disorder is compose of behavioral and psychological symptoms impacting on areas of one's life causing further problems. When a psychiatrist like Dylan works on the causes of the disorder such as chemical imbalances, he is now working on the Biological perspective of the treatment.
The air puff is the Unconditioned Stimulus
An air puff is "unconditioned" and will naturally require the rabbit to blink
Unconditioned Stimulus - Air Puff
Unconditioned Response - Blinking due to Air Puff
Conditioned Stimulus - Light
Conditioned Response - Blinking due to Light because it is paired with Air Puff
