Answer:
DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Instead, DDT is largely useless against many insects. Which of these would have prevented this evolution of DDT resistance in insect pests?
What would have prevented the evolution of DDT resistance in insect pests is the None of the insect pests would have genetic variations that resulted in DDT resistance.
Explanation:
I think the correct answer from the choices listed above is option B. A modification of the leaves into the spine in a cactus plant can be seen The spines are modified leaves. It helps defend the plant and also reduce the surface area which helps limit loss of water.
Answer:
Veinules
Explanation:
Veinules are smaller veins blood vessels that carries deoxygenated or poorly oxygenated blood from the tissues back to the heart except pulmonary veins and umblical veins
After the blood move from the capillaries, it enter smallest veins called veinules and then continually flows into the larger veins till it get to the heart.
<span>The structure and function relate because what the structure is made of infuences what the organ's function is. An example is that the heart is made of strong muscle cells. Therefore, it is fit to do the job of pumping blood around the body.</span>
