Oceans

[imskpwr]

As well as a conduit for the vital distribution of oxygen and hydrogen molecules across the planet, the Earth's oceans provides an effective buffer against much of the Sun's harmful radiation.

As well as a conduit for the vital distribution of oxygen and hydrogen molecules across the planet, the Earth's oceans provide an effective buffer

Besides a conduit for vital distribution of oxygen and hydrogen molecules across the planet, also the Earth's oceans provide an effective buffer

Besides a conduit for the vital distribution of oxygen and hydrogen molecules across the planet, the Earth's oceans also provide an effective buffering

The Earth's oceans provide not only a conduit for the vital distribution of oxygen and hydrogen molecules across the planet, but also an effective buffer

The Earth's oceans not only provide a medium for the vital distribution of oxygen and hydrogen molecules across the planet but also an effective buffer

[sukkhi]

As well as a conduit for the vital distribution of oxygen and hydrogen molecules across the planet, the Earth's oceans provides an effective buffer against much of the Sun's harmful radiation.

As well as a conduit for the vital distribution of oxygen and hydrogen molecules across the planet, the Earth's oceans provide an effective buffer

Besides a conduit for vital distribution of oxygen and hydrogen molecules across the planet, also the Earth's oceans provide an effective buffer

Besides a conduit for the vital distribution of oxygen and hydrogen molecules across the planet, the Earth's oceans also provide an effective buffering

The Earth's oceans provide not only a conduit for the vital distribution of oxygen and hydrogen molecules across the planet, but also an effective buffer

The Earth's oceans not only provide a medium for the vital distribution of oxygen and hydrogen molecules across the planet but also an effective buffer

whats the oa?

i bet on (d)

(a),(c)- modifiers used...should add to the subject (that is not what they're doing here instead going with the verb "provide")
(b)- misplaced "also"
(e)- not parallel