D all of these create a magnetic field. let me know if you want me to explain.
Answer:
Disease and Famine
Explanation:
If there is a disease that affects a type of plant, having other types of crops to rely on could save one from starvation. Also, only planting one crop in an area can change the pH and nitrogen levels in negative ways, so that eventually no plants can grow there. Not to mention the obvious balanced diet needed for a healthy body.
Answer:
1.It helps to digest our food.
2.It is used as antibiotics to treat bacterial infection and disease.
3.It is used by humans to create food products such as cheese, yoghurt, pickles, soy sauce and vinegar.
4.It is use to break down our sewage and to clean up oil spills..
Answer:
The limitation of phylogenetic species concept is b. Evolutionary histories are not known for all species.
Explanation:
The species that share a common ancestor and have similar traits and functions are grouped together as a result of the phylogenetic species concept. The phylogenetic species concept shows a unique evolutionary history of one organism with another of the same group. The major set back in the phylogenetic species concept is the lack of evolutionary histories for certain species. So, these organisms cannot be grouped according to the phylogenetic species concept.
