A popular way for a dog's playfulness to increase is to care good care of it and to make sure it's healthy.
The word playfulness is a noun. It is an uncountable noun.
The verb of playfulness is play. As in "to play somewhere or with someone or with something".
graceful playfulness
Muscular pain causes high CK levels in dogs
One thing that causes the greatest increase of motion of molecules is an increase in temperature.
Yes, the noun 'playfulness' is an abstract noun, a word for a feeling of fun and high spirits, an emotion.
The population of dogs increase because in these hard econmic times people don't have that much money so they can take care of there dogs.
Gravity.
when they get hurt.
An increase in volume or velocity of the water will increase erosion
It causes blood pressure to increase.
the main causes of the inflation is increase in the percapita income and this results in increase in the standard of living of the people .. and the other one is increase in the percapita income in our country