Helpful variations in a species accumulate over time through natural selection, which favors advantageous traits. Examples include beak length in birds and antibiotic resistance in bacteria.
Helpful variations accumulate in a species over time through a process called natural selection. Natural selection is the driving force behind the evolution of species. It works by favoring individuals with traits that are advantageous for their environment, allowing them to survive and reproduce more successfully, thus passing on these advantageous traits to the next generation.
For example, let's consider a population of birds with different beak lengths. In a food-scarce environment, birds with longer beaks may be better able to reach food sources, giving them a higher chance of survival. These birds are more likely to reproduce and pass on their longer beak trait to their offspring. Over time, the proportion of birds with long beaks will increase in the population.
Another example is antibiotic resistance in bacteria. In the presence of antibiotics, some bacteria may have variations that make them resistant to the drugs. These variants have a higher chance of surviving and reproducing, leading to the accumulation of antibiotic-resistant bacteria in the population.
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Renewable energy is exactly what it says -- it's renewable. Meaning, you can continue to reuse it or make more of it in a never ending cycles. Examples of a renewable energy could be trees (wood). You can keep growing trees and harvesting them.
Fossil fuels are things like oil or petroleum, they cannot be "grown" again, and are a one-time use.
Renewable energy has more benefits then that of fossil fuels because you can reuse renewable energy and keep the never-ending circle of energy going, unlike fossil fuels which can run out.
B.They can change the distance over which you apply a force.
C.They can change the direction in which you apply a force.
D.They can change the amount of force you exert.
this is science
The correct answer is B. They can change the distance over which you apply a force.
The incorrect statement about simple machines is A. They can change the amount of work done on an object. Simple machines do not change the total amount of work; instead, they offer a mechanical advantage by changing the force and distance relationship.
The statement that is not true of simple machines is:
A. They can change the amount of work done on an object.
Simple machines are designed to make work easier by changing the force and distance relationship. However, they do not change the amount of work done on an object because the product of the force applied and the distance over which it is applied (work) remains constant, according to the law of conservation of energy. A simple machine can change the direction of the force, change the amount of force exerted, and change the distance over which the force is applied, which are the benefits of its mechanical advantage.
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If this organ malfunctions, all other body systems will be starved of oxygen.
A. heart
B. kidneys
C. skin
D. small intestine
Vitamins. A lot of coenzymes are derivatives os vitamins especially B vitamins.
Hope this helps:)