What type of symbiotic relationship does a spider crab and algae have?

The algae lives on the crabs and this provides the crabs with a camouflage and gives the algae a place to live so this is beneficiary to both. In other words Spider crabs and Algae are Mutualism to eachothe.

Explanation:

trigonal pyramidal

tetrahedral

trigonal planar

bent

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.