How to prevent emphysema
Stop smoking.
Tobacco smoke is a recognized cause of emphysema and other forms of chronic obstructive pulmonary disease (copd), such as chronic bronchitis and asthma. The best way to avoid emphysema is to never start smoking.

If you're currently a smoker, quitting can help improve your health, even after years of smoking. Smoking is the cause of emphysema in 80% to 90% of all reported cases.

How to use a weed whacker
Get the weed whacker ready to go.
If you have a gas-powered device, check for gas. Electric, plug that bad boy up and make sure it won't come undone anytime soon.

Hold the weed whacker as close to the ground as possible, so as to find a comfortable position before you even turn it on. Turn the weed whacker on, and start weeding, using a steady side to side motion, walking forward, leveling weeds, and continuing forward.

A set of young boys are picture din the water on their backs holding up a green ball and one throws it into the goal. the outside of the building

is shown again and a flash of a car parked outside in the parking lot appears.

How to avoid crossbreeding as a dog breeder
Choose a dog of the same breed.
To avoid crossbreeding, the main thing you have to do is to breed your dog with a dog of the same breed. Both dogs must be purebreds and have no other breed mixed into their bloodline in the past.
This can be determined through pedigree papers presented to you by the breeder. For example, if you have a dachshund, only breed your dog with another dachshund.