In the case of multicellular animals we find there are two kinds of sex cells: the female sex...

We shoud save water and provided to poor peoples that they can drink water and don't die because...

Do you know One of the major negative effects on the environment is caused by heating e-waste...

Chlorophyll is the name of the green pigment that plants use to make food during a process called...

Presidents’ Day, in the United States, holiday (third Monday in February)...