The correct option is E.
The carrying capacity of a biological specie in an ecosystem refers to the maximum population size of the specie that the environment can sustain indefinitely given all the resources that are available in the environment. When the number of living organism in an ecosystem is above the carrying capacity, the number of death among the specie will increase until the carrying capacity is reached.
Answer: The correct options are
--> Disinfectants are used to inhibit or destroy pathogens,
--> Disinfection can occur by physical or chemical means,
--> Endospores and viruses can resist disinfectant treatment.
Explanation:
To prevent infectious diseases from spreading or to sterilise work area surfaces during the production of drugs, chemicals known as disinfectants as used. These are chemicals that kill or inhibit the growth of pathogens. Other chemicals such as antiseptics can also kill and prevent the growth of mainly pathogenic microorganisms. However, disinfectants are stronger chemicals than antiseptics and so are often used on non-living things and surfaces.
Disinfection does not necessarily kill all microorganisms, especially resistant bacterial spores (endospores) and viruses, so it is less effective than sterilisation.
There are generally two methods of disinfection:
--> The chemical method: A typical example of a chemical disinfectant is the carbolic acid. It is used for disinfecting lavatories and floors.
--> The physical method: here, physical agents are use to disrupt and damage the pathogenic organisms on work surfaces. Some typical example include: UV irradiation, heat, sunlight exposure, sonic or hydrodynamic pressure and radiation.
Answer:
1. What do you mean by Multiple Hazard Mapping (MHM)? (2 marks). 2. ... How are the information to be compiled for Multiple Hazard Mapping (MHM) (5 marks). 9. ... When an area is exposed to more than one hazard, a Multiple Hazard Map (MHM) helps the planning team to analyze all of them for vulnerability and risk.
Explanation:
Answer:
Odd couple. Surprisingly, the team found evidence for isotopes of aluminium (which has 13 protons) with both 29 and 30 neutrons.copper
For April, we have selected copper, a transition metal with chemical symbol Cu and atomic number 29.
Atomic Number19Atomic Mass39.0983 atomic mass unitsNumber of Protons19Number of Neutrons
copper
An isotope of copper contains 29 electrons, 29 protons, and 36 neutrons.
There must be 14 neutrons is a typical stable atom of aluminum.
True, the most common chronic diseases involve the heart.