what are the choices
Explanation:
photosynthesis is a way that plants make their own food.
Answer: https://www.wwf.org.uk/learn/wildlife/polar-bears#:~:text=Challenges%20affecting%20polar%20bears&text=The%20Arctic%20is%20warming%20about,ice%20to%20raise%20their%20young.
https://www.carbonbrief.org/polar-bears-and-climate-change-what-does-the-science-say
Explanation:
The heart is a hollow cone shaped muscular pump within the thoracic cavity
C.) New results should be verified by more experiments before it is accepted
Answer:
The first analysis to urine will be if there is presence of blood cells or macro molecules.
Explanation:
In filtration, since the urine pass trough a membrane, only small molecules could pass like glucose, amino acids, and urea.
If the urine is produce by secretion like in some insects, leeches, or teleost, then the movement of the molecules is due the osmotic pressure, so the ions are the present in the urine.
Hope this info is useful.
