Why are ruminants able to eat grass while humans cannot?

a. protists within their intestines

b. they have 4 valve hearts

c. bacteria within their intestines

d. both A and C

Answer D because that's what helps them digest it

Explanation:

There are two main problems with a grass eating but the main one is this one. The first is that human stomachs have difficulty digesting raw leaves and grasses. Animals such as cows, on the other hand, have a specialized stomach with four chambers to aid in the digestion of grass (the process called rumination). We were created with stomachs to eat multiple other things than grass because that's not a main food source compared to ruminants who have that main food source.

a mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. this uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.a geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged.