Salt is notoriously dangerous to land snails; however, some populations of aquatic, freshwater snail have brackish (or a mix of salt and fresh water) water adaptations and live in different parts of a river system. A group of scientists monitored salt concentrations in the habitats of two freshwater snail populations located nearby and recorded the salt level as follows (in ppt, parts per thousand):
Population 1 (Day 1): 0.1 ppt (morning), 0.0 ppt (afternoon), 0.1 ppt (evening)
Population 2 (Day 1): 0.3 ppt (morning), 0.5 ppt (afternoon), 0.2 ppt (evening)
In 3–5 sentences, 1) describe in which population you'd expect to see more adaptations for salt water and 2) explain how such adaptations would become more common in this population.
make it short
1) Population 2 is more likely to have more adaptations for saltwater.
2) This is because the salt concentrations in Population 2 are higher and more variable, providing a greater selection pressure for individuals with saltwater adaptations to survive and reproduce. Over time, these adaptations would become more common in the population through natural selection.
One of the effects of climate change is the warming of ocean and air temperatures. The sex of sea turtle offspring is determined by temperature during development. Temperature over 87° Fahrenheit will result in female offspring. In 2-5 sentences, describe what change you'd expect to see in the distribution of traits, if any, and whether it would be caused by a genetic adaptation, a mutation, or the environment.
make the answer short