Can neither...nor be used to combine sentences with two different subjects and verbs like neither are animals able reproduce nor plants survive from the heat?

You're on the right track, but the sentence needs a bit of tweaking. Here's why and how to fix it:

The Problem:

* Subject-verb agreement: The phrase "neither are animals able to reproduce" has a plural subject ("animals") with a singular verb ("are"). Similarly, "nor plants survive from the heat" has a plural subject ("plants") and a singular verb ("survive").

The Solution:

To correct the sentence, you need to make sure the verbs agree with their respective subjects:

Correct Sentence:

Neither animals are able to reproduce, nor plants survive from the heat.

Explanation:

* "Neither animals are able to reproduce" - "Animals" (plural) is the subject, so we use the plural verb "are."

* "nor plants survive from the heat" - "Plants" (plural) is the subject, so we use the plural verb "survive."

Additional Notes:

* You could also rephrase the sentence to use a singular subject for both clauses, like: "Neither an animal is able to reproduce, nor a plant survives from the heat."

* It's important to pay attention to subject-verb agreement when using "neither...nor" to ensure your sentences are grammatically correct.