Answer:
Andrea will study how many species in the area have gone extinct or endangered.
Explanation:
Answer:
4.3%
Explanation:
i had this same question on a test
Answer:
16 cells
Explanation:
According to the given information, the generation time of the bacterial cell is 15 minutes. This means that the bacterial cell would have a total of 60/15= four divisions (1 hour= 60 minutes) in one hour. A division in a single bacterial cell produces two new bacterial cells. If both the newly formed bacterial cells enter the cell division, a total of four cells will be formed. Likewise, if all the newly formed bacterial cells enter the process of cell division, a total of 2^4= 16 cells will be formed by the end of four consecutive cell divisions.
Answer: By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.
Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation. The majority of nitrogen is fixed by bacteria, most of which are symbiotic with plants. Recently fixed ammonia is then converted to biologically useful forms by specialized bacteria.
