Figure 2.
Number of retrieved studies published between 1911 and 2020 related to flower-visiting insects in Opuntia spp. by country.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.