Option (a) has a greater chance of being the answer — the respiratory system does take in Oxygen to break down glucose into Carbon dioxide and water vapor, releasing energy.
Answer:
Potassium Feldspar
Explanation:
Got the answer after a lot of research.
Answer:

Explanation:
We are asked to find how much of a 40 gram sample remains after 12 years.
Iron-55 has a half-life of 3 years. Therefore, after 12 years, 4 half-lives have been completed.
- 12 years/3 years = 4 half-lives
Every time a half-life is completed, half of the sample's mass decays. Remember we start with a 40 gram sample.
- 1 half- life: 40 g / 2 = 20 g
- 2 half-lives: 20 g / 2= 10 g
- 3 half-lives: 10 g / 2 = 5 g
- 4 half-lives: 5 g / 2 = 2.5 g
There is also a formula that can be used to solve this problem.

Where A₀ is the initial amount, t is the time, and hl is the half-life.
We know 40 grams is the inital amount, 12 years is the time, and 3 years is the halflife.




After 12 years, <u>2.5 grams </u> of Iron-55 will remain.
The potential jobs are:
- Clinical research
such involved in the studies to invent new drugs to treat a certain type of illness
- Diagnoticians
Such as involved in determining what causes the patient's neurological related symtoms
- Cognitive neuroscientists
Involved in expanding the knowledge on how our cognitive functions could be associated with the brain's function
- NeuroSurgeon
Involved in surgeries that focused on inside the head area.
- Health adviser
Gives advice to people in maintaining their overall well being.
Answer:
I would say chordates. (Not absolutely sure so double check)
Explanation:
Chordates have a dorsal nerve cord, which is super close to a spinal cord. (Which vertebrates have.)