What is estivation? it is part of science.?

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Actinobacteria sp. are fermenting organisms (which do you use oxygen to breathe) referred to as chemoorganohetereotrophs this means they break down organic material and convert it to inorganic material. which part of the carbon cycle does this describe

Which of the following are the functions of the integumentary system? yadda-yadda, the 1st answer is the brainliest. : )