Final answer:
Long-term marijuana use can lead to issues with brain development, resulting in problems with thinking, memory, and learning. It may also cause coughing and breathing problems, along with developmental issues in children when used during pregnancy.
Step-by-step explanation:
One consequence of smoking marijuana for a long time is problems with brain development. Individuals who begin using marijuana in their teenage years may experience difficulties with thinking, memory, and learning. This is particularly concerning as the teenage years are critical for brain development, and the impairments could have lasting effects.
Additionally, if marijuana is smoked frequently, it can lead to coughing and breathing problems. This is similar to the effects of smoking tobacco, as both introduce harmful chemicals into the lungs with the potential to cause chronic respiratory issues. Pregnant women who smoke marijuana risk problems with child development both during and after pregnancy.