Do not be afraid of them
All of the above
Look for them places with many flowers
Be patient and observe them
In honeycombs
On flowers
In the bark of trees
In underground cells
They memorized a map
They hear them
They smell them
They dig at random until they find one
Nectar and pollen
An egg
A waxy coating along the inside
To hide from birds that would eat them
To make a nest for their young
To find food underground
To make a burrow to keep themselves cool in the summer
4000
400
10
1000
Most of the native bees in North America have already been studied.
To find females to mate with
Even native bees that can sting rarely sting people unless you scare or hurt them.