Worms don't have lungs. They breathe through their skin.
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The DNA is condensed before replication in the form of chromosomes and then the chromosomes are divided.
They are little soft bodied insect. They suck the plant's nutritious liquid and if they are in large number, they can kill the plants.
Answer:
T cells are born from hematopoietic stem cells, found in the bone marrow. Developing T cells then migrate to the thymus gland to develop (or mature). T cells derive their name from the thymus.
Explanation:
