Answer:
-all species change gradually over time.
Explanation:
Mutation often results from cell replication and division. These occur as small, random, errors within the genetic code that become more common or stable within a population over time as traits.
As organisms live within varying niches, environmental changes may render some genetic traits obsolete. However, others may become more beneficial as an adaptation. These adaptations, which make an organism and its offspring suited to a niche, and more likely to survive and reproduce become inherited- this process is called evolution.
Answer:
A is the correct answer.
Explanation:
The founder effect is when a few individuals in a population colonize/"found" a new location that is separate from the old population.
The founder effect occurs when a small group in a population moves away from the original population and forms a new one.
Explanation:
Water is the most abundant substance in the body. An average healthy adult is 45 to 75 percent water. Percent of water declines with age. Males have more body water than females.
Answer:
c. Fungi
d. Yeast
Explanation:
Both fungi and yeast will be effectively removed by a 0.22 micron pore size filter.
<em>The size of microscopic fungi ranges from 2 to 10 microns while the size of yeast ranges from 3 to 4 microns in diameter. Hence, both organisms will be effectively filtered off by a 0.22 micron filter paper.</em>
The size of bacteria ranges from 0.2 to 2 microns while that of virus is in nanometer. Hence both cannot be effectively removed by a 0.22 micron pore size filter paper.
The correct options are c and d.
Answer :
(a) The angular speed of this bacterial motor is 
(b) The time taken by the motor to make one revolution is 
Explanation :
(a) To determine the angular speed of this bacterial motor.
Angular speed : It is defined as the rate at which an object changes its angle.
Formula used :
where,
= angular speed
v = tangential speed = 
r = radius = 
Now put all the given values in the above formula, we get:
Thus, the angular speed of this bacterial motor is
(b) to determine the time taken by the motor to make one revolution.
Formula used :
where,
T = time
Now put all the given values in this formula, we get:
Thus, the time taken by the motor to make one revolution is
