Why don't all of the offspring in the wild survive?

Not all offspring in the wild survive due to various factors such as predation, competition for resources, disease, and environmental conditions. Many species produce more offspring than can realistically survive to adulthood, which is a natural strategy to ensure that some will reach maturity despite high mortality rates. Additionally, genetic variations can result in some individuals being less suited to their environment, further impacting survival rates. Ultimately, these challenges are part of the natural selection process that shapes populations over time.