The atomic mass of potassium is 39. if its atomic number is 19, how many neutron are there

Which statement best describes how the environment influence the trait of an individual?

What river separate u. s. a from canada

After completing meiosis II human sex cells have a total of ___ chromosomes

Each cell that enters the cell cycle contains sister chromatids a. True b. False

Which best describes the reactants and products of photosynthesis? A: reactants are formed inside the plant, and products are taken in from the environment by the plant B: reactants are taken in from the environment by the plant, and products are

If you follow the longest food chain in the food web below from grass to owl, how many trophic levels are there? grass aspen grasshopper rabbit-fox frog #snake owl o A. Three B. Five C. Four D. Two

What's the meaning of diagnoses

Tell me what you think of adolescence as toddlerhood of adulthood

If a woman has blood type o and a man has blood type ab, what is the probability that they will have a child with blood type o?

What happens directly afther prophase?