The part of the neuron that receives signals from other neurons is the: MCQ with Answer and Explanation

Explanation:
Diphtheria is a highly contagious bacterial infection caused by Corynebacterium diphtheriae. It primarily affects the mucous membranes of the nose and throat, producing a thick gray pseudomembrane. The bacteria also produce a potent exotoxin that can damage the heart, kidneys, and nervous system. It is preventable by the DPT vaccine.

Explanation:
Industrial melanism is a classic example of natural selection in action. Before the industrial revolution, light-colored moths were more common as they blended with lichen-covered trees, avoiding predators. Pollution killed the lichen and darkened the trees, making dark-colored (melanic) moths better camouflaged. The population shifted to predominantly dark moths, demonstrating survival of the fittest.

Explanation:
Acid rain is caused by emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) reacting with atmospheric water to form acids. Biological Oxygen Demand (BOD) measures the amount of oxygen required by microbes to decompose organic matter, indicating water pollution levels. Eutrophication (nutrient enrichment) causes algal blooms, depleting oxygen and killing aquatic life, thereby decreasing biodiversity. Thus, statements 1 and 2 are correct.