Which is/are the characteristics of primates' prehensile hands?

Primate's have prehensile hands and feet. The characteristic features of primate's prehensile hands are as follows:
1. These have five digits or fingers that includes thumb that allows the animal to hold or grab any object.
2. Hands are sensitive and have touching sensation.
These properties make the life of primates easy to live on trees.

What have scientists learned about plant behavior by studying the dodder plant

When scientist examine data such as historical documents, they are using the "scientific methods"