Harmful chemicals or viruses that can be transferred from a mother to her developing fetus are called teratogens.
Antibodies
Yes, but some viruses are more harmful than others.
because they are harmful
it can be harmful but we have antibiotics so they aren't as harmful as some viruses.
the two ways genes can be transferred into cells by using viruses and liposomes as vectors.
Antibodies
Some viruses target harmful organisms. For example, bacteriophage viruses kill bacteria. Other viruses might kill mosquitoes or weevils or other harmful insects without hurting any other species.
Chemicals are added to public water sources to disinfect and purify the water by killing harmful bacteria and viruses. This process helps ensure that the water is safe to drink and meets regulatory standards for public health.
Antibodies
Some viruses are beneficial in that they have commercial uses. Examples are tulips with streaks of color. Other viruses cause diseases such as colds, HIV.
Water can become unsafe to drink when it is contaminated with harmful bacteria, viruses, or chemicals. It is important to ensure that water is properly treated and stored to prevent it from going bad.
Three viruses are known to harm a developing baby: rubella, cytomegalovirus (CMV), and herpes simplex. Toxoplasma gondii, a parasite.causes serious problems. Untreated syphilis in the mother also is harmful.