Answer:
The options.
A) Planet B has an orbital period 64 times shorter than Planet A.
B) Planet B has an orbital period 4 times shorter than Planet A.
C) Planet B has an orbital period 64 times longer than Planet A.
D) Planet B has an orbital period 4 times longer than Planet A.
E) Planet B has an orbital period 8 times longer than Planet A.
The CORRECT ANSWER IS E)
E) Planet B has an orbital period 8 times longer than Planet A.
Explanation:
Using P2 = a3 to do the estimation.
Let the size of the orbit (a) be represented in astronomical units (1 AU is the average distance between the Earth and Sun) and the period (P) is estimated in years, then Kepler's Third Law says P2 = a3.
It implies that:
A) the period of a planet is independent on its mass.
B) all orbits that possess equal semimajor axis possesses equal period.
C) planets that very distant from the Sun moves slowly than those that are nearer to the sun.
P2 = a3
Given, a =2
P2 = (2)^3
P2 = 8
E) Planet B has an orbital period 8 times longer than Planet A
The word desert is often used metaphorically to describe a deprived environment, as a desert is deprived of water. Thus from Gao Village: A Portrait of Rural Life in Modern China by M C F Gao:
High desertion rates in any company, battalion, or division indicated failures of command and logistics, for which blame pointed to leaders as much as to the men who deserted. Some soldiers deserted when all the other members of their units had been killed and their own deaths appeared inevitable.
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Answer:
The resistant strain developed as a mutation and had no negative effect on fitness.
Explanation:
In examining a natural population of bacteria, resistant strain developed as a mutation which has no negative effect on fitness often causes observations of antibiotic-sensitive and some antibiotic-resistant strains, even if the population has never been exposed to any antibiotic.
