Songs for birds give them a communication system so that they can alert other birds and also to attract mates.
I'd say that the answer is observational study because they're just analyzing the data and if it were an experiment they'd be taking data and comparing it.
Answer:
The correct option to answer your question will be option "b" the one that looks sharp at large size has better (smaller) angular resolution than the one that looks fuzzy.
Explanation:
The angular resolution is defined as the capacity of any capturing device like a camera, microscope, telescope to distinguish small details of an object. The picture that looks fuzzy when the size is increased to poster size, is the one with less angular resolution and therefore if the size is increased the picture will be fuzzy.
Answer:
Hospitality is how friendly or generous a group of people are. It can be seen as a relationship between two people, whether they are stranger, co-workers, or just guests and people you know.
Some synonyms are:
- helpfulness
- kindness
- welcome
- friendliness