Answer:
A barometer
Explanation:
It is commonly used to measure atmospheric pressure
Answer:
C. The DNA copied, a new cell membrane forms between the DNA copies, and the cell splits into two cells.
Explanation:
Answer:
The advantages of biotechnology include curing infectious diseases, creating more efficient fuels and increasing farming yields to feed more people. Disadvantages of biotechnology include antibiotic resistant bacteria, new allergic reactions and higher prices for farmers.
Answer:
When an organisms reproduces asexually its offspring is identical, this means it has the same DNA code.
For example viruses look for specific protein types at cell membranes to "anchor" or "stick" and then inject their genetic material. If all the individuals of a population have the same membrane proteins the whole population is vulnerable to be infected by the virus.
Sexual reproduction creates genetic variability due to mechanisms like crossing over and the assortment of chromosomes during meiosis. On top of it, different parents contain different information which leads to offspring with similar but different characteristics which can end up having different membrane proteins that can save them from the virus.
Answer:
C. birds that use the trout as a source of food
Explanation:
Living organisms feed on one another in their natural environment in order to obtain energy for their various activities. According to this question, overfishing by humans decreases the population of trout living in a particular river.
This means that in that aquatic ecosystem (river), the population of organisms that feed on trout as a source of energy will also decrease. In this case, it is the birds. Hence, birds that use the trout as a source of food.
