What process allows gas exchange across the respiratory membrane?

So i have a question that says What is the pH of acid rain and i got the answer to that (using science book) but it wants me to tell why it is important (for a weathering paper)

Why is the term "cell theory" appropriate? why is the cell theory a theory

Yes or No answer only - Have you ever been faced with an ethical dilemma?

Lisa made a model of a volcano to represent what happens when a volcano erupts. What does the model of the volcano most likely represent? something large something small something complex something oversimplified

Explain why algae are considered the primary producers for aquatic and marine ecosystems

Why is it difficult for most chemical reaction in living things to occur without enzyme?

Touch sensations and proprioception are carried primarily along the: a. spinocerebellar tract b. dorsal column system c. spinothalamic tract d. spinoreticular tract

What is the first step of DNA replication?

Whats not a pathogen a. virus b. dust c. fungus d. bacteria

Puedo conectarme con personas que hablan español