Substances lacking the element

are classified as inorganic,

silicon

carbon

hydrogen

oxygen

Which of the following plants grow in clumps, bear rhizoids and walled spores, but lack xylem and phloem? A) algae B) non-vascular plants C) vascular plants

Which chambers of the heart below are the ventricles? Which chamber receives oxygen - poor blood from the body?

During childbirth, the baby pushes on the wall of the uterus. this is detected by pressure receptors that signal the brain to release oxytocin. if this is a positive feedback process, select the likely next step.

What would happen if global warming were continue

What is the main reason why the sun appears to be so bright? A) it is relatively close to earth. B) it is yellow-white star. C) it has ha large absolute magnitude. D) it is classified as a very luminous star.

How are nuclear tests performed without contaminating the atmosphere?

Example of a decomposer and explain what would happen if decomposers were absent from a forest ecosystem

Coal, oil, and natural gas

Which factor that contributes to cancer increases with exposure to the sun? radiation asbestos tobacco genetics

What was the purpose of the Land Ordinance of 1785?