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