What part of he wave is labeled with an A. 1) Amplitude

2) Wavelength

3) Crest

4) Trough

(Never mind I figured out it's wave length)

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

no i don't feel that humans have oversubscribed some medications

the dali lama

explanation:

he is quite fat and then we can talk about the details