Which element provides strength to the exoskeletons of clams and oysters?

A) sulfur

B) oxygen

C) hydrogen

D) phosphorus

Other than the transport of materials, what is another function that vascular tissue performs in a leaf?

What is a light-year? A) The distance light travels in one earth year B) The distance light travels from the sun to the earth C) The time it takes to travel across the universe D) The distance the light travels in one orbit of the moon

List the kingdoms and give an example of an organism in each

The nursing student is preparing a presentation which will illustrate the various stages of fetal development. The student will label which stage as the time when the various tissues of the growing embryo begin to assume specific functions? a.

A bacterium is composed of a single cell. based on this information, you know it has which sign of life? A) information system B) response to the environment C) one or more cells D) reproduction

How can the period of a pendulum be increased?

A nurse instructor explains the various functions of carbohydrates to a group of student nurses. Which of the following is the correct function of carbohydrates in the human body? Select all that apply. a. Source of energy b.

What is the term for a plant that produces a seed without a protective cover? A. Protostome B. Angiosperm C. Gymnosperm D. Deuterostome

Porcini mushrooms (the reproductive structures of Boletus edulis, a fungus) appear in the forest every summer and fall. Boletus edulis are mycorrhizal fungi and associate with many different species of pine trees.

What does a stage does a cell spend most of its its life in