21 km/h can be considered a moderate speed. It is faster than walking or jogging but slower than driving a car. In terms of running, it is a decent pace for a beginner or casual runner, but for more experienced runners, it may be on the slower side. Ultimately, whether 21 km/h is fast or not depends on the context in which it is being compared. **

To calculate 5/21 of 21, you would multiply 5/21 by 21. This can be done by multiplying the numerator (5) by the whole number (21) and then dividing by the denominator (21). So, 5/21 of 21 is equal to (5*21)/21, which simplifies to 5. Therefore, 5/21 of 21 is equal to 5. **

H&M has made efforts to become more sustainable in recent years by implementing initiatives such as their Conscious Collection, which uses more sustainable materials. However, there are still concerns about the fast fashion industry as a whole and the environmental impact of producing large quantities of clothing. While H&M has taken steps in the right direction, some critics argue that true sustainability requires more significant changes in the industry's practices. **

Running 5 km in 21 minutes is a very fast pace, equivalent to running at about 14.3 km/h. This pace is considered excellent and would be challenging for most recreational runners. Achieving this time requires a high level of fitness and training. It is important to set realistic goals based on individual fitness levels and gradually work towards improving speed and endurance. **

Yes, running 5 kilometers in 21 minutes is considered a good time. It equates to an average pace of around 4 minutes and 12 seconds per kilometer, which is quite fast. This time would be considered competitive in many local 5k races and is a sign of good fitness and running ability. However, what is considered a "good" time can vary depending on individual fitness levels and running goals. **

Organic products are made from ingredients that are grown without the use of synthetic pesticides, herbicides, or fertilizers, and are often certified by a regulatory body. Eco-friendly products, on the other hand, are designed to have minimal impact on the environment throughout their entire lifecycle, from production to disposal. While organic products focus on the natural ingredients used, eco-friendly products consider the overall environmental impact of the product. In essence, organic products focus on the ingredients, while eco-friendly products focus on the entire product lifecycle. **

A difference of 5 km/h can be considered remarkable depending on the context. For example, in the context of speed limits on roads, a difference of 5 km/h may not be considered remarkable. However, in the context of sports or racing, a difference of 5 km/h can be significant and have a noticeable impact on performance. Ultimately, whether a difference of 5 km/h is considered remarkable depends on the specific situation and what is being compared. **

Organic farming practices can be more sustainable than conventional methods in terms of reducing chemical inputs, promoting biodiversity, and improving soil health. However, there are challenges to the scalability and efficiency of organic farming, which can impact its overall sustainability. For example, organic farming typically requires more land and labor to produce the same amount of food as conventional methods, which can limit its ability to meet global food demand. Additionally, the transportation and distribution of organic products can have a higher environmental impact due to their shorter shelf life and the need for refrigeration. Overall, while organic farming has many sustainable benefits, there are also limitations to its long-term sustainability on a large scale. **