Answer:
1- It's often impossible to repeat trials on the same subjects. 2-Subjects may report an inaccurate medical history. 3-It can be difficult to control all possible variables. 4-It's impossible to come up with testable scientific questions for human subjects.
Explanation:
i hope this helps u
It makes up the Nervous System, if you're asking what it is made up of, Brain: Cerebellum, Cortex, Brain Stem, and Basal Ganglia; The spinal cord is made up of: Vertebrae and cartilage; the parts of the spine are: Cervical, Thoracic, Lumbar, Sacrum, and Coccyx <span />
Answer:
First, you breathe in oxygen through your trachea. The air travels down through the trachea to your lungs. Then your lungs transport the oxygen through your pulmonary artery to your heart. Then the heart transports the oxidized blood throughout your body. Then once the blood gives away all the oxygen your veins take the filtered blood through your pulmonary vein and back to your lungs to get oxidized again. I hope this helps
Explanation:
Answer:
cell, tissue, organ, organ system, organism
Explanation:
Xerophytic biome has such plants and these adaptations help them to conserve water