Answer:
Mass and density
Explanation:
Density of an object is defined as its mass per unit volume. Mathematically, the relation is given by :

m = mass and V = volume
If we know the density of the Eraser and its mass, we can easily find its volume. Hence, the two tools are mass and density.
Answer:
Ischemic heart disease, or coronary artery disease
Explanation:
The deadliest disease in the world is coronary artery disease (CAD). Also called ischemic heart disease, CAD occurs when the blood vessels that supply blood to the heart become narrowed. Untreated CAD can lead to chest pain, heart failure, and arrhythmias.
Impact of CAD across the world
Although it’s still the leading cause of death, mortality rates have declined in many European countries and in the United States. This may be due to better public health education, access to healthcare, and forms of prevention. However, in many developing nations, mortality rates of CAD are on the rise. An increasing life span, socioeconomic changes, and lifestyle risk factors play a role in this rise.
Risk factors and prevention
Risk factors for CAD include:
high blood pressure
high cholesterol
smoking
family history of CAD
diabetes
being overweight
Talk to your doctor if you have one or more of these risk factors.
You can prevent CAD with medications and by maintaining good heart health. Some steps you can take to decrease your risk include:
exercising regularly
maintaining a healthy weight
eating a balanced diet that’s low in sodium and high in fruits and vegetables
avoiding smoking
drinking only in moderation
Answer: April 1935
In April 1935 the Olympic was retired from service. It was later sold for scrapping, and many of the fixtures and fittings were bought and put on display by various establishments, notably the White Swan Hotel in Alnwick, Northumberland, England. Britannic became a hospital ship and was sunk by a mine in the Mediterranean in 1916; though she was the largest ship sunk in the war, only 30 lives were lost. Olympic became an armed troopship and in 1918 sank a German submarine.
Explanation:
If I remember it well, c. the fugitive slave act <span>increased sectional tensions in the 1850s. Also I'd admit Kansas-Nebraska Act of 1954.</span>