Answer:
Scientist 1
Explanation:
<em>The conclusion of scientists 1 is valid.</em>
Human activities such as burning of fossil fuels, agriculture, deforestation, etc. leads to the emission of carbon in the form of carbon dioxide into the atmosphere. <em>An increase in the population of a city will only lead to an increase in these activities and hence, an increase in the amount of carbon emitted into the atmosphere.</em>
Also, volcanic activities leads to the production of volcanic gases which is a mixture of carbon dioxide, oxides of sulfur, nitrogen, etc.
<u>However, an active volcano that is several miles away from the city might not be a major source of carbon in the air above a large city. The carbon dioxide produced from such volcanic activity thins out before reaching the city.</u>
Poaching is what it is called
Answer:
DNA is copied, checked for errors, and packaged neatly before cell division.
Explanation:
While looking at a cell under a microscope, a scientist is able to see a
biological molecule. This molecule is a nucleic acid with double
strands and
<span>
contains the nitrogenous bases adenine, thymine, cytosine, and guanine. Based on this information, the scientist can conclude that </span>"
The nucleic acid is DNA and would be found in the cell’s nucleus."
Answer is at the very end
Explanation:
Given parameters:
Mass of the asteroid = 10 x 10⁹kg
Distance between the asteroid = 850km
Unknown:
Force = ?
Solution:
We can predict the outcome of this reduction in distance between the two masses using the newton's law of universal gravitation.
The law states that "the gravitational force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distances between them".
Mathematically, we have;
F =
F is the gravitational force
G is the universal gravitational constant = 6.67 x 10⁻¹¹Nm²kg⁻²
m is the mass of the body
r is the distance between them.
From this, we know that as the separation increases, the force of gravitation will reduce since the mass is constant.
The distance between the two asteroids decreased from 1000km to 850km, this will increase the force of attraction between them and we expect the force to be higher than 6700N.
At 1000Km, force = 6700N,
since as the distance reduces the force increases, we expect the force to be about 9200N.
Let us verify this by plugging the values into the equation:
F =
F = 9200N
