General Science Questions

Crystal size in igneous rocks is determined by rate of cooling i.e, the time taken by magma to cool down. 

Hence, the slower the rate of cooling the larger the crystals. The faster the rate of cooling the smaller the crystals.

Chlorophyll is the pigment that gives pant leaves their green color.

The term just noticeable difference is synonymous with difference threshold and refers
to the detection of change.

Stimulus diffusion is a type of expansion diffusion in which the idea is acceptable or adopted but not in its original form and expanded to culturally acceptable.

For example :

1. Mc. Donalds is also in India but not in beef. Indians culture will not accept beef and so it is with different forms like veg, non veg but the idea is same.

2. Yoga is an idea where in different regions use yoga for different reasons but the idea is same.

In all the fatal accidents, 30% of them are with speeding factor.

In biology, Homology is defined as any characteristic of biological organisms that is derived from a common ancestor. 

Hence, Homology is evidence of Common ancestry.