When carbon dioxide is carried in the blood it combines with (a1) to form (a2) which then releases (a3). This reaction (a4) the pH of the blood meaning it is more (a5).

The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )

Where are the following choices

Ilike to eat pears ya nah wha im sayin b? shout out to all my pears b.

Achair would be nonliving, also a toy, clothesand living things would be humans, animals, bugs