None, egg cells don't have chromosomes. No, sex cells do have chromosomes. meiosis reduces chromosome number so that sex cells (eggs and sperm) have a half set of chromosomes–one homolog of each pair. This is the haploid number.
Cell membrane allows some material to pass through it while on the same time it blocks other material from entering through it
The sun rays are received by the plants and explell oxygen and we breath the oxygen to be able to survive
Solid Liquid Gas or Plasma , a define shape would have to be the solid
The disease is mainly caused by a lack of a slippery substance in the lungs called surfactant. This substance helps the lungs fill with air and keeps the air sacs from deflating. Surfactant is present when the lungs are fully developed.
https://medlineplus.gov/ency/article/001563.htm
