Chemistry, 28.07.2019 01:00 JoshuaXYP9978

It's work 25+ points and only have 20 minutes which of these are characteristics of reptiles? check all that apply. they undergo internal fertilization. their urine is concentrated. they use their skin for gas exchange. they have two-chambered hearts. they are covered in scales.

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It's work 25+ points and only have 20 minutes which of these are characteristics of reptiles? chec...