Morphology of Flowering Plants

Are there any short or long term effects apparent in tissues ifa zone (or the whole) of human body is scanned with ultrasonicwaves often?

1) Which organism can cause food-borne intoxication and can be presentin honey and home-canned foods?

2) Foods on the GRAS list?

7. In order to safely can low-acid foods like green beans, botulismspores must be killed by boiling for 30 minutes at 120 degreesCelsius. This can be achieved in a pressure canner filled withwater. What pressure is needed to safely preserve green beans andother low acid foods?