The problem starts already earlier:wildlife experts can only estimate the number of species in the world generally!
This is the case because there are simply too many species, and it takes time to documents them; because some areas (ocean bottom for example) are very hard to access and because sometimes it's hard to know whether we're talking about a new species or a variation within the same species.
so if we even don't know how many species there are, it's even harder to know how many are endangered.
<u>Answer:</u>
The crinkling sound of the bag is the conditioned stimulus for the rabbit.
<u>Explanation:</u>
- The rabbit has got acquainted with the fact that every single time the crinking sound is made, it is followed by a treat. Hence, any crinkling sound heard by the rabbit is processed as an indication of a treat on its way.
- This is because the sound stimulates the senses of the rabbit.
- The rabbit is unable to distinguish between the sounds of bags crinkling. Thus, it responds in the same way every single time it gets to hear a bag crinkling.
QUESTION 6 Answer: Passing the bar exam is both a necessary and a sufficient condition on becoming an attorney.
Explanation: Following is the chronology of steps that need to be followed to become an attorney.
1. Pursue a bachelor's degree course in any subject and pass it
2. Attempt the 'Law School Admission Test' and pass it.
3. Get a 'Juris Doctor' from a law school.
4. Pass the Bar Examination conducted by the Bar Council.
5. Acquire the license to practice law.
QUESTION 7 Answer: In the United States, winning the most electoral votes is both necessary and sufficient to be elected president.
Explanation: In the United States, the voting for the office of President is not done directly by the registered voters. Rather, the registered voters elect their representatives as electors. These electors together form a group named 'electoral college' which is entitled to vote in the presidential elections directly.
This form of election is called 'indirect election' in which the people choose their representatives and trust them to choose their President and Vice President.
A legal declaration made by a candidate gives details of his educational qualifications, assets and liabilities and serious criminal cases pending against him. This provides an opportunity to the voters to make their decision on the basis of the information provided by candidates. Hope this helps :)