Answer:
your arteries that are connected to your lungs are also connected to your heart and then you need to be in the vena cava which are connected to your heart as well so you need the veins
Answer:
Because the vaccine is an antigen from living, weakened or killed microorganisms that activate the immune system and the body produces protective antibodies.
D. I just took the test on USA Test prep so ya, remember to mark this the brainlyest answer
Answer:Which is an adaptation?
Adaptation is the evolutionary process where an organism becomes better suited to its habitat. This process takes place over many generations. It is one of the basic phenomena of biology. ... Adaptation occurs because the better adapted animals are the most likely to survive, and to reproduce successfully.
What are the benefits of biodiversity to humans?
A healthy biodiversity provides a number of natural services for everyone:
Ecosystem services, such as. Protection of water resources. Soils formation and protection. ...
Biological resources, such as. Food. Medicinal resources and pharmaceutical drugs. ...
Social benefits, such as. Research, education and monitoring.Adaptation involves coping not only with the physical abiotic environment (light, dark, temperature, water, wind), but also with the complex biotic environment (other organisms such as mates, competitors, parasites, predators, and escape tactics of prey).
Explanation:
