The answers are following
1)a
2)a
3)d
<span>for accurate results, for example when they are making vaccines, these are weakened harmful or disease causing viruses,, too little of the virus then it would not be a vaccine or simply would not build you antibodies, and too much of it would not also not a vaccine since it will already inflict a disease or possibly be fatal</span>
Answer: A Puede ser posible un mecanismo de copia de material genético
Explanation:
El material genético, permite ser replicado, mediante la secuencia de doble cadena con el apareamiento de las bases con ayuda de la enzima telomerasa
ocean - Large bodies of water.
current flowing towards equator carry cold water from poles
current flowing towards away from equator carry warm water from poles
Example - Humidity
