In the Mendeleev periodic table, the vertical columns are called groups and the horizontal rows are called periods.

The metal elements are found on the left hand side of the periodic table, and the non-metal elements are found on the right.

The most common medications used to treat tuberculosis include: Isoniazid. Rifampin (Rifadin, Rimactane) Ethambutol (Myambutol)

Healthy coral reefs are among the most biologically diverse and economically valuable ecosystems on earth, providing valuable and vital ecosystem services. Coral ecosystems are a s...

Subject Verb Agreement

Parts of Speech

Very Important question. Females can reduce the stress by doing the work in fun manner by enjoying the household work instead of being in stress. The works assigned to them are su...

Verbally or giving some gift.

We learn to respect time.