In the replica plating experiments, bacterial colonies from a master plate were reproduced using a disk of sterilized velvet, a silken fabric with a dense pile consisting of upright loops of yarn. Why is velvet a better choice for replica plating than plain cloth fabric

b. the carbon cycle ensures living things have a source of hydrogen

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.