On irreversible effect of both deforestation and water pollution on the environment is the - A- extinction of species.
B- thinning of the ozone shield.
C- depletion of the atmospheric carbon dioxide levels.

How was the climate when the ambulocetus was alive

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.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above