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4 years ago

Does the atmosphere help prevent meteor showers?

Biology

2 answers:

MissTica4 years ago

3 0

Pretty much, yes. They burn up in the atmosphere, usually far higher than the ozone layer.

astra-53 [7]4 years ago

3 0

Yes because by time the meteor gets through the atmosphere it's been shrunken and it's alot smaller then it would be if there was no atmosphere <span />

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B) how does a vaccine change the body

valentinak56 [21]

A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria.

3 0

3 years ago

Read 2 more answers

An organism that must consume other organisms for energy is a

Nikitich [7]

Answer:

A consumer of energy

Explanation:

5 0

3 years ago

The freezing and thawing action of water affects a rock by?

AVprozaik [17]

The answer would be D.

6 0

4 years ago

Which of the following is not due to water’s surface tension?

jonny [76]

The correct answer is option D, that is, ice floating on the water surface.

The cohesive forces among the molecules of a liquid are accountable for the process called surface tension. Surface tension refers to the tension of the surface film of a liquid resulting due to the attraction of the particles in the surface layer by the bulk of the liquid that seems to reduce the surface area.

The examples of surface tension are walking of small insects on water, floating of a needle, the surface tension of water offers the essential wall tension for the creation of bubbles with water, and surface tension is accountable for the shape of liquid droplets.

The low density of ice makes it float at the liquid water surface, like ice cubes in a glass of water, or an iceberg. The lower density of water in its solid form is because of the way hydrogen bonds are aligned as it freezes, the water molecules are pushed further far away in comparison to the liquid water.

4 0

3 years ago

In humans, the sickle-cell trait is caused by a single defective allele, but sickle-cell disease only occurs in individuals that

In-s [12.5K]

Answer: The probability that the two children have the disease is 1/16 or 6,25%

Explanation: If the disease only occurs in homozygous individuals and the parents have the trait but not the disease that means is a recesive allele and the parents are heterozygous for this trait.

According to proportions stablished by Mendel, when there is a cross between 2 heterozygous (Ss x Ss) indivdials the probability to obtain a homozygous recesive (ss) descendant is 25% or 1/4 as shown in punnet square below:

$\left[\begin{array}{ccc}&S&s\\S&SS&Ss\\s&Ss&ss\end{array}\right]$

Taking into account that the condition of the first kid does not imply the condition for the second, it should be analyzed as 2 independent events.

1. First kid has 1/4 of probability have the dissease as shown in punnet square

2. For a second birth, child has the 25% chance to have the disease

The probability that both events to happen is the product of each event probabilty:

p = 1/4 * 1/4 = 1/16 or 6,25%

5 0

3 years ago