Answer: True
Explanation: Peripheral vascular disease (PVD) is a blood circulation disorder that causes the blood vessels such as arteries (atherosclerosis) and veins outside the heart and brain to narrow, block, or spasm. PVD causes pain and fatigue especially during exercise. Risk factors may include ageing, diabetes and smoking.
If an orderly set of steps is followed, the observations and results are more reliable.
Using photosynthesis, which consists of a series of chemical reactions that require carbon dioxide and water, and store chemical energy in the form of sugar. Light energy from light drives the reactions. Oxygen is released into the atmosphere as a byproduct of photosynthesis.
<span>This is the equation for photosynthesis: 6 CO2 + 6 H2O → 6(CH2O) + 6 O<span>2</span></span>
If the number of chromosomes was not reduced before sexual reproduction, any offspring would have too many chromosomes causing genetic defects.
