The prefix tri means three. In the word tri-phosphate, three what?

What evidence proves endosymbiosis happened

What is well-tested explanation that brings together many observations in science would include such things as evolution, plate tectonics and biogenesis?

The four types of precipitation are A. dew, rain, snow and hail B. fog, rain, hail and snow C. snow, ice, water and hail

No plant can survive without water Absolute or Qualified?

What makes a molecule a saturated fat?

Which diseases are caused by viral infection? Anthrax West Nile Measles Hepatitis A Chicken Pox Tetanus Rabies Bubonic Plague Influenza (flu) Hepatitis B Mononucleosis Gonorrhea Lyme Disease Cholera Whopping Cough Common Cold

Which of the following is not true regarding the formation of a dipeptide? A. a molecule of water is produced B. two amino acids are joined together C. a double bond forms between carbon and nitrogen D. a protein is formed

What are the two characteristics of autotrophs

Why is it necessary to do a spinal tap when you suspect a bacterial infection of the central nervous system? why can't you use a blood test?

Name the major greenhouse gasses and how they get into the atmosphere