Imagine that you're able to fully dissolve a powdered substance in water. what can be said about this creation?

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection