Image
Why do high and low tides vary between two locations within close proximity of one another?
Image:Scott Camazine
Black widow spiders are at the top of the list of things to avoid in San Diego because of their poisonous bite. Identifying what types of webs spiders weave helps you identify — and avoid — certain types of spiders.
Why do some spiders weave spiral orbs while others weave, tangled or tunneled webs?
Resources: