Answer:
This amendment serves as the basis for the political freedoms of the United States, and freedom of the press plays a strong role in keeping democracy healthy.
Explanation:
Answer:
The homogeneous mixture is only in the one phase of matter, whereas heterogeneous mixture is always in two or more than two different phases of matter. Solutions are termed as the homogeneous mixtures, on the other hand, suspensions or colloids are termed as the heterogeneous mixtures.
Examples:
Homogeneous:
Bronze: this alloy is an example of homogeneous substances since it is composed of tin and copper.
Milk : this mixture that we see in a uniform way is composed of substances such as water and fats.
Heterogeneous:
Mixtures in two or more phases are heterogeneous mixtures. Examples include ice cubes in a drink, sand and water, and salt and oil. The liquid that is immiscible form heterogeneous mixtures. A good example is a mixture of oil and water.
Answer:
Crossing over
Explanation:
During prophase I of meiosis, homologous chromosomes pair to form bivalents. The chromatids of bivalents may form intimate contact points called chiasmata. At the chiasmata breakage may occur and exchange of chromatids segments between non sister chromatids may take place. This is crossing over ad results in new gene combinations causing variations.
Answer:
0.859 minutes of arc
Explanation:
The arc length for a given radius and angle in radians is ...
s = rθ
So, the angle is ...
θ = s/r
For the given geometry, the angle in radians is ...
θ = (0.75 mm)/(3000 mm) = 0.00025 radians
In minutes of arc, this is ...
(0.00025 radians)(60 minutes/degree)(180 degree/(π radians)
= (0.0025)(60)(180)/π minutes
≈ 0.859 minutes
The angle subtended is about 0.859 minutes of arc.
The answer for your question is B
