Vaccination is a process of injecting a dead or weakened form of a pathogen into the body. How does this help strengthen the immune system?

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.