Answer: Option D.
Technician A.
Explanation:
Oil residues on hoses, it's components or fittings indicate an area where refrigerant may be leaking.
An oil spot on the A/C hose is an indication of refrigerant leak in the system. Good oil levels are important for the system good performance. If the level of oil is to low, the compressor will not have lubrication and if it is too high, the heat exchange will affected which will lead to poor air conditioning performance. If a leak is formed on A/C hose, an oil spots that collect dirts will disappear. An refrigerant leak detector will help verify if there is no leak in the system.
So Technician A is correct.
Answer:
Arctic animals find many ways to adapt to the cold conditions. Animals need shelter and insulation in freezing cold places. The animals there tend to have thicker and warmer feathers and fur. Many of them have larger bodies and shorter arms, legs and tails which helps them retain their heat better and prevent heat loss.
Answer:
Option B
Explanation:
The genetic code utilised by almost every organism are the same, as in the same sequences of codon codes for the same amino acid in almost every organism, thus the genetic code is said to be universal.
Answer:
ovary
Explanation:
after pollination a pollen tube is form which grows downward though the pistil until it reaches the ovary where fertilization takes place
The key processes in the fast carbon cycle include: Photosynthesis: the absorption of CO2 from the atmosphere (terrestrial plants) and from oceans (marine plants) to produce organic carbon structures. Respiration: the release of CO2 into the atmosphere, soil and oceans by animals as they exhale.