Which of the following might best be achieved by using a scientific model? 1) determine the distance to a star 2) find the mass of a boulder 3) show how an atom acts in a magnetic field 4) study the light given off by a star give examples/reasoning as to why you chose what you did, 'cause im seriously stumped tvt

Hemoglobin is the compound in red blood cells that carries oxygen to the body. the distribution of hemoglobin in women in g/dl of blood is approximately normally distributed with mean 14 and standard deviation 1. too little hemoglobin, and you're anemic. 2. too much, and (unless you live at high altitudes), you can have other problems.

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

Select the correct answer from each drop-down menu proteins are