Answer:
Explain in your own words an atom and an element.
Explanation:
A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing just one proton and one electron.
Answer: Pulmonary veins.
Explanation:
Pulmonary vein receives oxygen-rich blood from the lungs into the left atrium where it is pumped into the left ventricle, the aorta and then further distributed to the rest of body.
Answer:
Municipal solid waste (MSW), is the type of waste that contain items related to everyday use.
Different countries have different ways to manage their Municipal solid waste (MSW), some of the techniques used by developed and under-developed countries are as following:
Developed Countries: Example of developed countries are Norway, Australia and USA et-cetra. Disposal methods used are:
- Composting - decomposing organic solid wastes into humus.
- Sorting - In this method garbage is sorted or dumped in bins on the basis of their type such as paper, colored glass and white glass et-cetra.
Both: Disposal methods used by both the countries are:
- Incineration - disposal of waste through burning
- Landfills - MSW is placed in landfills apart from human contacts.
Under-developed Countries: Example of under-Developed countries are India, Afghanistan and Algeria et-cetra. Disposal methods used are:
- Open uncontrolled dumping - throwing waste in open
- Waste picking - waste pickers pick recyclable waste.
Hence, there are some common and some different ways to dispose MSW in developed and under-developed countries.
The nail bed(sterile matrix)
