B. The U.S stock market crash and Franklin D Roosevelt’s policies
The reason is to help in seed dispersal. Seed dispersal is the movement or transport of seeds away from the parent plant. Due to the fact that plants have very limited mobility they have to rely upon variety of dispersal; vectors to transport their seeds, including both abiotic and biotic factors. Seed dispersal is important because if seed are not dispersed, many germinating seedlings will grow very close to the parent plant which would result to competition between every one of the seedlings as well as the parent. The competition for essential growth factors such as light, space, water and nutrients.
The possible reason for this condition is Staphylococcus
aureus. Staphylococcus aureus causes over 50% of bone infections. Other
organisms include Proteus vulgaris and Pseudomonas aeruginosa, as well as E.
coli. The Treatment of acute osteomyelitis
includes large doses of I.V. antibiotics (after blood cultures identify the
infecting organism). Surgical drainage may be indicated, and the affected bone
is immobilized. The client usually requires I.V. fluids to maintain hydration,
but oral intake isn't necessarily prohibited.
The population age structure is is simply the structure of a population in a given time period by age groups. In order to represent the population age structure in a simple and efficient way, the population pyramid is used. Depending of what type of population is dominant, the pyramid will have different shapes. It can easily show us the trends and type of demographic transition for a particular population. When there high birthrates, the pyramid tends to be widest at the bottom, but when there's low birthrates the pyramid tends to be widening in the middle and upper sections.
4-c
5-b
6-a
7-d
8-c
hope this helps
