Answer:
Mapping the human genome and biotech
Explanation:
Social Change is simply defined as the act of alterating the culture and societies over the period of time.
The four social revolutions:
1. hunting and gathering societies developed into horticultural and pastoral societies.
2. the plow brought about agricultural societies
3. steam engine brought the industrial revolution
Answer:
Clearing the land to raise crops
Explanation:
During the process to clear the land, humans began to understand how to deal with plants, and which species are better adapted to that kind of land. Plus, while understanding how to plant and crops, humans also tried to create tools and techniques to obtain the better of the plantation. A good example is the use of canals to control the water and to use it in the plantation, but especially how to organize each part of the plantation.
Answer:
Knowledge
Explanation:
Knowledge could be defined as information, facts, skills gathered through experience or education. In the case above, the student has knowledge of how his "class average" works and so he "knows" that if he works hard enough, he can improve it to a B. However if he didn't have this knowledge, he probably would have started panicking and already think there isn't any hope of improving his average.
<u>Answer:</u>
<em>Earthworms are very sensitive towards the odor. </em>
They use it for locating the food in the soil. Because earthworms are dependent upon microorganism in the soil, they must be sensible for the <em>presence of any food around them if they do not respond the odor then they may die. </em>
Earthworms have the escape response so they quickly respond the external stimuli at the part they are stimulated. <em>With the increasing frequency of stimuli at the same part they slowly decrese the response towards it.</em>
