The early ancestors of the horse (shown in the picture) were adapted to life in tropical forests. gradually the forests disappeared and were replaced with open grasslands. because of the gradual change in habitat, modern horses
a)
have five toes that allow them to walk well on soft ground.
b)
are herbivores instead of carnivores like their early ancestors.
c)
are taller with long legs and are capable of great speed to escape predators.
d)
have gradually grown larger, but show no major changes from the early ancestors.

So here you go are taller with long legs and are capable of great speed to escape predators

Option (C)

Explanation:

The horse has undergone a straight-line evolution, originating from the Eohippus (about 50 million years back) to the present day horse. The early ancestor of the horse had short legs and mainly lived within the woods and was only able to graze. They were not able to run faster. But, over the course of time, the earth has gone various changes in its landforms, as a result of which the forest areas were transformed into the open grasslands with abundant grasses upon which they were mainly dependent on. This enabled them to undergo changes in their morphological characteristics and led to the formation of the modern-day horse, where their height and legs have increased and they are now able to run at a faster speed thereby being able to protect themselves from the predators.

Thus, the correct answer is an option (C).

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :