What's the subphylum of a frog

Brian has a medical condition called cone dystrophy, which is a disorder of the cone cells in the eye. what symptoms would you expect brian to have? a. inability to see in the dark b. difficulty determining colors c. difficulty determining shapes and outlines d. inability to see in all light conditions

Based on their relative positions in the periodic table, which two elements would have the same number of valence electrons?

Sarah and john are having a discussion on genetic diversity sarah believes it happens over a long period of time john believes it happens immediately who is correct