How do shallow estuary water create unique habitats for organism living here and why

Estuaries harbor unique plant and animal communities because their waters are brackish—a mixture of fresh water draining from the land and salty seawater. Estuaries are some of the most productive ecosystems in the world. ... Estuarine habitats are typically found where rivers meet the sea.

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

mammal

explanation: