Which substance is removed from the atmosphere so that plants can carry out photosynthesis?

A) nitrogen

B) water vapor

C) oxygen

D) carbon dioxide

I believe it's D but I'm not sure

A volcano erupts and creates a new island. This is an example of what type of succession? A. Primary Succession B. Secondary Succession C. First Succession D. Final Succession

David shows delayed intellectual development and has flattened facial features. The doctors explain that this genetic disorder is a result of extra genetic material in the 21st chromosome. Which disease is David suffering from?

In what way is a gene pool representative of a population

What is an example of a destructive water wave? tsunami earth quake orain

Why do some people get lumps when they have cancer?

Which finding would the nurse most expect to find in a neonate born at 28 weeks' gestation who is diagnosed with intraventricular hemorrhage (ivh) ?

If the germs in a vaccine we're not dead or deactivated then the vaccine would

Water is formed when two hydrogen atoms bond to an oxygen atom. When a substance is made of two or more atoms like this, we call it A) a mixture. B) a complex. C) a compound. D) an element.

Which genotype is homozygous? a. XxTt b. XXTt c. xxTT d. Xxtt

In what organelle does the process of respiration occur