In 2017, the total population of Africa was estimated to be about 1,250,000,000 people. This number, in billions, is:

1.25 billion.

Explanation:

As per the question, it is given that

The total population of Africa estimated is 1,250,000,000 people

As we know that

1,000,000,000 = 1 billion

For

1,250,000,000, it would be

= 1,250,000,000 ÷ 1,000,000,000

= 1.25 billion.

Hence,  the population in billions is 1.25 and the same is to be considered

the fourth amendment protects:

"the right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."  

so this would mean the denial to search and seizure without warrant or permission.

in about winter like late november to january