Which of the following correctly identifies the number of each element involved in the chemical formulas? NH4CO3
O
N: 4
H: 4
C: 3
O: 3
O
N: 1
H: 1
C: 1
O: 3
)
N: 0
HR 4
C: 0
O: 3
N: 1
H: 4
C: 1
0:3

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

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?