Grass seeds can remain viable for different lengths of time depending on the species. Generally, most grass seeds are viable for 2-3 years if stored properly in a cool, dry place. Some grass seeds, like those of Bermuda grass, can remain viable for up to 5 years. It is important to store grass seeds in airtight containers and keep them away from moisture and extreme temperatures to maintain their viability. **

Nullisomy, a condition where an individual is missing an entire chromosome pair, is typically not viable in humans. This is because the loss of a whole chromosome can lead to severe developmental abnormalities and is often incompatible with life. However, there have been rare cases where individuals with nullisomy have survived, but they usually have significant physical and intellectual disabilities. Overall, nullisomy is not considered viable in most cases due to the severe impact it has on development and health. **

Yes, I believe that these turtles are viable in the long term. With proper conservation efforts and protection of their habitats, these turtles have the potential to thrive and increase their population numbers. By raising awareness about the threats they face and implementing measures to address these challenges, we can ensure the long-term survival of these turtles. Additionally, ongoing research and monitoring can help us better understand their needs and how to best support their populations for the future. **

The viability of vegetable and fruit seeds can vary depending on the type of seed and how it is stored. In general, most vegetable and fruit seeds can remain viable for 1-5 years if stored properly in a cool, dry place. Some seeds, like tomatoes and peppers, can remain viable for up to 5 years, while others, like onions and leeks, may only last 1-2 years. It is important to check the specific recommendations for each type of seed to ensure the best germination rates. **

Marigold seeds are generally viable for about 1-3 years after harvest if they are stored properly. It is important to store the seeds in a cool, dry place to maintain their viability. After 3 years, the germination rate of the seeds may start to decline. Therefore, it is best to use marigold seeds within a few years of harvest for the best results. **

A duck egg is typically viable for incubation for about 7-10 days after it has been laid. It is important to collect the eggs promptly and store them properly before incubation to ensure the best chance of successful hatching. After the 10-day mark, the viability of the egg decreases, and the chances of a successful hatch diminish. It is recommended to candle the eggs around day 7 to check for signs of development and remove any non-viable eggs from the incubator. **

Sperm cells can remain viable in a dead man's body for a short period of time, typically around 24-48 hours. After death, the body's metabolic processes cease, but the temperature and pH of the reproductive system can still support the survival of sperm for a limited time. However, the viability of the sperm will gradually decrease as the body begins to decompose. Therefore, if there is a need to retrieve sperm from a deceased individual for reproductive purposes, it should be done as soon as possible after death. **

Senna can be a viable pick as an ADC due to her unique kit that allows her to provide utility for her team while still dealing damage. Her ability to heal and shield allies, as well as her crowd control with her root, make her a versatile pick in the bot lane. Additionally, her scaling with souls collected from enemy units can make her a strong late-game carry. However, her lack of mobility and lower base attack speed compared to traditional ADCs can make her more challenging to play in certain matchups. **