The process of sperm formation in the testes is called: MCQ with Answer and Explanation

Explanation:
Acid rain, containing sulfuric and nitric acids, corrodes buildings, monuments (like the Taj Mahal), and statues made of limestone and marble. The depletion of the stratospheric ozone layer reduces its ability to absorb harmful ultraviolet (UV-B) radiation, increasing the amount reaching the Earth's surface. Global warming is caused by an increase, not a decrease, in atmospheric greenhouse gases (like CO2 and methane), which trap more heat. Thus, statements 1 and 2 are correct.

Explanation:
Selman Waksman and his team isolated streptomycin from the soil bacterium Streptomyces griseus in 1943. It was the first effective antibiotic against tuberculosis. Fleming discovered penicillin, Pasteur developed rabies vaccine, Koch identified tuberculosis bacillus. Waksman coined the term 'antibiotic'.

Explanation:
Aldosterone, secreted by the adrenal cortex, increases sodium reabsorption (and water follows) and potassium secretion in the distal tubule and collecting duct. ADH increases water reabsorption only. Renin is an enzyme, natriuretic peptides inhibit sodium reabsorption.