Scientists estimate that there are between 700,000 and 5.1 million fungi on the planet. From your reading of "The fungi: 1, 2, 3 ... 5.1 million species?" by Meredith Blackwell, briefly describe (2–4 sentences) two reasons that this estimate is so broad. In other words, why are recent estimates of fungal species diversity so varied?

The answer is below

Explanation:

1. This is because there is varying degrees or amounts of habitats and areas that yet to be assessed and examined when carrying out the estimates of fungal species diversity which leads to a broad range of estimates.

2.  Also, with the increments in the numbers of different species accumulation that has currently been discovered; a 1.2% increase in species is discovered every year,

Hence, it is ideal to conclude that a large number of species are being discovered in the later research which is making the estimates to be different.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this