Answer:
Proteins
Explanation:
allow big or charged particles through the membrane
Dorsal Body Cavity: Cranial cavity, enclosed by the skull and contains the brain. Spinal canal, enclosed by the spine and contains the spinal cord.
Ventral Body Cavity: Thoracic cavity, enclosed by the rib-cage and contains the lungs and heart.
Abdominal cavity/Pelvic cavity, contains the digestive organs, spleen kidneys, bladder, and reproductive organs.
Answer:
The IV is the food and the DV is how much mass they gained over 3 weeks with certain food.
Explanation:
The food is the independent variable while the mass is the dependent variable. The dependent variable is the variable that changes in response to changes in the independent variable. The independent variable is the variable that is deliberately altered to monitor its effects on the dependent variable.
D. Carbon nitrogen and phosphorus