Which activity could ensure the ability of land to support crop growth? a)rotation planting of crop. b)irregular watering of crop. c)clear cutting without replanting. d) large numbers of grazing animals

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.

Most of the carbon on earth is stored in the form of

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes