Describe the angiosperm life cycle step by step.

Explanation:

1)In the flower's male parts, the anthers, diploid microsporangium undergo meiosis giving rise to microspores. ...

2)In the flower's ovules, the megasporocyst undergoes meiosis creating four megaspores. ...

3)Next pollination occurs.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.