The correct answer here is C - out of the developments listed, the most
recent development in the use of vaccines was the approval from the
government of a vaccine that can be used against Hepatitis B. This
happened relatively recently, in 1981.
Answer:
145 degrees F
Explanation:
To prevent contamination and food borne infections, raw beef, pork, lamb and veal steaks, chops and roasts must be cooked to a minimum of 145°F internal temperature before being removed from heat source.
This minimum temperature reading will annihilate traces of food borne pathogens in the food and make it safe for consumption.
Answer:
Cytokinesis is the stage of the cycle when the genetic information is replicated, resulting in two daughter cells and takes place after mitosis.
Explanation:
Answer: B
Explanation:
The nutrients that wash off of the continents (waste products, sediment) are often rich in essential minerals to plankton and other microscopic aquatic life, which in turn are the base of the marine food chain.
Tsunamis are too infrequent and do not dredge up any sediment most of the time, and C is not correct because nutrients don't just rain from the sky.
Answer:
1. Ozone
Explanation:
Ozone is a substance with the chemical formula, O3, found in the stratospheric part of the atmosphere. It functions to prevent the harmful ultraviolet (UV) radiation from the sun from reaching the Earth. However, due to anthropogenic activities i.e. human activities that releases greenhouse gases e.g. CO2, CFC etc. the protective function of the ozone layer is wavering.
Hence, based on this question, people are concerned over the fact that this OZONE layer is depleting, hence, risking the exposure to the harmful radiation from the sun.
