word meaning or define
1 element =
2 breathing rate =
3 spiracles =
4 speed =
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1)Element is an essential or characteristic part of something abstract.
2)A person's respiratory rate is the number of breaths you take per minute. The normal respiration rate for an adult at rest is 12 to 20 breaths per minute.A normal breathing rate for an adult at rest is 8 to 16 breaths per minute.
3)an external respiratory opening, especially each of a number of pores on the body of an insect, or each of a pair of vestigial gill slits behind the eye of a cartilaginous fish.
4) the rate at which someone or something moves or operates or is able to move or operate.
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