What are environmental pressures of giraffe

The lineage of pea plants produced round seeds for four generations. the plants that fertilized these pea plants also produced round seeds. however, in the fifth generation, the plant produced to two plants with wrinkled seeds. can that be possible?

What two conditions must be present for osmosis to occur?

Part of the elbow is formed by the end of the humerus. what do you call this part?