Explanation:
another word for life cycle
Answer: A,B,D
Explanation: trust i just did it on USA test prep:)
Answer and Explanation:
The Immune System. It comprises the white blood cells, lymphatic system, etc. The immune response is the production of antibodies in response to antigens present in pathogens and other foreign matter.
The leukocytes are formed in the bone marrow of long bones and lymph nodes. Their function is to protect the body from invasion of foreign material like bacteria and viruses( pathogens). They help fight against infections by engulfing and digesting pathogens and production of antibodies which are proteins that bind to pathogens. Their number increases greatly during infections.
Answer and Explanation:
Due to technical problems, you will find the complete question, answer, and explanation in the attached files.
Most of the changes in an ecosystem are gradual. The gradual changes taking place in the ecosystem allows the organisms to evolve slowly. As a result of evolution, the species can adapt and survive in the changing environment.
Also, the gradual changes allow speciation and other ecological advantages. Any sudden changes in the ecosystem can be drastic, as all the organisms would not be able to adapt the sudden change, as a result they will extinct.