yes it does from the black residue
The block absorbs the sunlight and blue color is reflected off the block. That is why the blue block appears blue in the sunlight.
The plants die usually from lack of sunlight because the oil spreads on the surface creating a block between sunlight and the underwater plants. This lack of sunlight prevents the process of photosynthesis and therefore the plants die from no energy provided.
cumulonimbus clouds block out sunlight!
The plants would most certainly die; if the water was murky it would block out sunlight, and if the sunlight was blocked out, then the plants would have no source to make food.
A good clue would be water in the oil. That said, just because you do not have water in the oil, doesn't mean the block is not cracked. Have a good mechanic check the car.
There will be oil in the water on a 1997 RM125 if the head gasket is leaking. It allows oil and water to freely mix across the cylinder head and engine block.
You probably have a cracked head gasket, and the oil mixed with the water that circulates through the block and got into your radiator.Or if the car ran hot and you have aluminun heads, you could have warped the head causing the water and oil to mix. Or your block could be cracked.
You have a blown headgasket or cracked cylinder head/engine block. It can also be a leak at the oil cooler. Its at the oil filter mounting, check that 1st.
Cord/Cable is resistant to Sunlight, Oil, Water, and the -A is a Flexibility designation.
Lack of water in you engine block. Lack of oil in your engine block. Can cause piston siege.
Bad Head Gasket or Cracked Block (rare)
There is a water leak somewhere in the block.