By the time an infant is 4 months
of age, close vision is already well established. When babies are born,
their vision is not as developed as that of older children or adults. Major
improvements however occur during the first few months of life.
Answer:
Gram negative bacteria don't retain purple color as they contain thin cell wall which is composed of peptidoglycans present between inner cytoplasmic cell membrane and bacterial outer membrane.
Explanation:
They contain some characters like-
- The outer membrane is important as it protects them from antibiotics,detergents that damages the peptidoglycans of cell membrane.
- The outer membrane is composed of lipopolysaccharide that secrets lipid A component which causes toxic reaction.
- This toxic reaction creates different health hazards like high fever,increase respiratory rate,low blood pressure etc.
- Braun's lipoprotein present between outer membrane and peptidoglycans by a covalent bond.
Más agua salada
Al analizar la superficie del planeta, sencillamente se puede estimar que un 71 % está cubierto de agua, y el restante 29 % es masa continental. Ahora bien, la superficie no equivale a la masa, por lo tanto no podemos afirmar que la Tierra sea un 71 % de agua y el resto de tierra. Debemos ser un poco más específicos.
Answer:
The correct option is A.
A. Small test pits can be conducted in an undisturbed part of the surveyed area to find buried artifacts that may not be readily seen on the surface.
Explanation:
This is because archeological survey refers to the study , exploration and digging of sites to obtain archeological remains. The basic sim of this is to get remains that are not visible to man underneath.
usually , the sites are dug out by a shovel so as to determine whether the soil contains any archeological emains that cannot be seen on the surface. This involves the action of excavating the out something or remains especially an archaeological site.
