A rancher is interested in the ability of a grassland ecosystem to maintain primary production for cattle forage for many years. Data shows that the average precipitation and temperatures vary each year. Due to the variability in precipitation and temperatures, the grass does not always grow enough to feed all of the cattle, and the rancher bought hay to feed them. What would be the best method of land management to use to improve the stability his grassland ecosystem so that the rancher does not need to buy hay? 1 point
Plant the most drought-tolerant grasses to account for varied rainfall
Allow the cattle to only graze on one-fourth of the grassland each year
Use multiple species of grasses in his grassland pastures
Plant the most cold-tolerant grasses to account for varied temperatures

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

answer;

-vessels in the chest

the diagnosis of angina pectoris literally means "vessels in the chest"

explanation;

-angina pectoris is the medical term for chest pain or discomfort due to coronary heart disease.it is the chest pain due to an inadequate supply of oxygen to the heart muscle. the pain is typically severe and crushing, and it is characterized by a feeling of pressure and suffocation just behind the breastbone.

agina pectoris is caused by reduced blood flow to your heart muscle. the blood carries oxygen, which the heart muscle needs to survive. when the heart muscle isn't getting enough oxygen, it causes a condition called ischemia