Answer:
The correct statement is that Cardiac muscles have shorter absolute refractory period than skeletal muscles.
Explanation:
"Cardiac muscle also called heart muscle or myocardium is one of three types of vertebrate muscles, It is an involuntary, striated muscle that constitutes the main tissue of the walls of the heart."
Answer:
B) unlearned actions that exist consistently throughout a species
Hey! The answers (if the question requires two answers) is chemical spills and fires. Of only one answer is required then fires.
Reason for first answer (chemical spills and fires) it mentions that Kyle makes sure that "the storage of chemicals--" are all correct, having that being said he makes sure that there are no chemical spills. The reason for fire is becuase it mention that he makes sure the oxygen tanks are properly stored. Well certain chemicals (when mixed with oxygen) can cuase a fire, therefore fire is a good answer for rather it's a two options answer or just one. Hope this helps!
Answer:
Birth Rate
Now, this might seem very obvious to you, but when babies are born, it results in a population change! Social scientists who study this trend have some key terms, though. First, the fertility rate in a country refers simply to the number of children born. This is different from the fecundity rate, which is the number of children who could be born in a given society. In other words, fecundity is the biological capacity of humans to produce children.
Death Rate
Just as when babies are born, when members of a society die it changes the population. This might be a bit morbid to think about, but scientists refer to this as the mortality rate, which is simply the number of deaths that occur in a society. This is usually calculated by looking at the number of deaths per 1,000 individuals. In the United States, for example, the death rate is 8/1000 people. Just like birth rate, the death rate in a country depends on things such as availability of quality medical care, disease, war, or famine.
Migration Rate
One important factor that accounts for a change in population is migration. At the broadest level, migration refers to movement; it's the flow or circulation of people in societies. There are two kinds of migration: emigration and immigration. Emigration means to leave one's own country for another. Immigration means to enter into a country other than one's own.
It refers to the separation of the three powers/branches: Executive, Legislative, and Judaical. It separates them in both the federal and state government.
I hope this answer helped you! If you have any further questions or concerns, feel free to ask! :)