When is stretching most effective? a. when it’s used to warm up muscles b. when it’s performed first thing in the morning c. when cardiorespiratory exercise is completed d. when paired with other types of exercise

C. When cardiorespiratory exercise is completed.

Explanation:

Stretching is always a good idea, and there is not necessarily a set time for you to do so. However, stretching is more effective once cardiorespiratory exercise has been completed. This is because during exercise, you have been moving your muscles, and these will be warm. Moreover, you are likely to be more flexible because you have increased circulation to these muscles.

c. genetic engineering

explanation:

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.