Which of the following decreased carbon dioxide levels in the atmosphere?

A. Cellular respiration

B. Decomposition by bacteria

C. Burning fossil fuels

D. Photosynthesis

True breeding animals have certain characteristics that are carried to subsequent generations. What are the advantages of true breeding? A. the development of a new breed of the animal B. introduction of new traits in future generations C.

Why do species have their own niche

Describe the function of the nervous system in this situation

Broccoli, cabbages, and brussels sprouts all descend from the same wild mustard and can still interbreed. These varieties were produced by

How do you write 2-3 paragraphs on evolutionary history/advances from the monerans to protists to fungi?

Tetralogy of fallot is a congenital condition of the heart that manifests in four distinct anomalies of the infant heart.

A veterinarian thinks that a dog has swallowed a key ring. Which types of electromagnetic waves is the doctor most likely to use to check the dog? u O gamma rays microwaves radio waves O X-rays

The new cell formed by the union of the spermatozoon and the ovum is the:

Explain what it means to describe a water molecule as "polar "

What kinds of molecules can pass through the cell membrane without any problem?