birth defects or so called "mutations" can be caused by genetics, toxins crossing placenta during pregnancy, a large number of pregnancy complications and problems at delivery including loss of air, loss of blood and medications such as pain relievers crossing the placenta. Drinking alcohol, even once, during pregnancy can cause fetal alcohol syndrome.
The two main concerns of physics are the study and the understanding of matter and energy and their interactions.
The main side effects from vaginal progesterone during pregnancy is increased vaginal discharge.
There main concern was they would predict the future.
ethics of everyday life
transport!
There are two main concerns that i can think of.Family and Career.
be smart and know what you are doing
The two main concerns are Dengu fever spreading, and terrorism.
Yes it is the main sign of pregnancy, so if there is a chance that you could be pregnant, you should take a pregnancy test.
The main health concerns for children ages 2 to 5 are just common infections and body injuries. At this age, they seem to be accident prone so head injuries and broken bones are a main concern.
As snarky as this sounds, science and technology are ideas. They can have no concerns, they are simply tools for people to use to further there own concerns.