Due to the importance of agriculture in Virginia's economy, it is imperative that what natural resource must be conserved?

Which of these cells of the dermal tissue of plants prevent water loss and control gas exchange? phloem cells companion cells parenchyma cells guard cells

Define structural adaptation and give an example.

How is basalt created?

Choose the correct option An Insect that live in colony is 1) Ants 2) Dragon fly 3) House fly

Alexander came to power at age and reigned for years.

The front leg of an iguana and the wing of a bird look different, but both limbs likely originated from a similar limb in a shared ancestor. Structures such as these are said to be A) heterogeneous B) differentiated C) vestigial D) homologous

What's the genotype of human female

Fluid filled sacs found between the skin and underlying bony prominences are called

Trees, such as those in the deciduous forest, are very important to the environment. If the number of trees on earth continues to decrease significantly, what might be the result?

List two reasons why amphibians must live in moist environment.