Naturally ocurring, solid,inorganic, Crystal shape, and definite chemical composition.
All living organisms have ways of maintaining homeostasis. They have mechanisms for controlling such factors as their internal temperature, water balance, and acidity. Homeostasis is necessary for normal life processes that take place inside cells.
Answer:
Answer is C.
Explanation:
A. The vessel length is pretty much constant. The body can't length or shorten blood vessels.
B. Blood viscosity is also fairly constant because the composition of blood cannot change quickly enough to change resistance as needed.
C. This is the main way resistance is controlled. The smooth muscle surrounding blood vessels can rapidly respond to hormonal or metabolic stimuli and contract/relax to adjust diameter.
D. Again, temperature is fairly constant in the body and would not be a good way to alter resistance.
You have give the question because we need to look the f1 generation traits first
I had trouble with this one, I was on a quiz I had.
Norman Borlaug developed a drought and disease resistant dwarf wheat which helped the people of Mexico and India during food shortages.
