Write one suitable word for the following sentences.A. The air tubes of insectsB. Tiny pores on the surface of leafC. An anaerobic organism

The word “microbes” in the third paragraph could best be replaced by which of the following?Pregunta 7Seleccione una:A.pieces of dustB.rays of lightC.trapped bubblesD.tiny organisms

a) Insects use tracheae to allow gases to diffuse into their blood.b) Spiracles are openings in the tracheae to the external environment.c) Spiracles mainly open on the upper surface of an insect's body.d) The tracheae branch and divide into smaller tubes.e)Gases move directly in and out of insect cells by diffusion.f) Gases have uniclirectional (one-way) movement in the tracheae.g)Insect gas exchange occurs to facilitate cellular respiration.

What is the missing word? __________ cells move mucus and dust particles out of the trachea.

Choose the correct option to complete the analogy w.r.t. respiratory structures.Aquatic arthropods : Gills : : Earthworm : ____________

In aerobic respiration, glucose and oxygen are used up and carbon dioxide, water and __________ are released. What one word completes the sentence?