Which functions should Selena use as headings to complete
the chart?
X: Flight
Y: Feeding and Digestion
X: Maintaining Body Temperature
Y: Circulating Oxygen
OX: Flight
Y: Circulating Oxygen
X: Maintaining Body Temperature
Y: Feeding and Digestion

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!

it's d - life cycles - apex