According to an estimate, almost ___ percent forests have been lost in the tropics, compared to only 1 percent in the temperate region.

What is the reaction between an acid and a base called?

Magnesium (Mg) + Oxygen (O2) = ?

________ is not a storage device.

The strength of a force is usually expressed by its __________.

If the speed of an object moving along a straight line is constant, its motion is said to be _________.

What type of a body plan does coelenterates, ctenophores and echinoderms have?

__________ are made up of sclerenchymatous cells. These are generally absent in the primary phloem but are found in the secondary phloem.