Immigration means moving out of a population
true or false?

Name the type of chemical that speeds up digestion

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an