The answer to number 6 is a.
Glucose level increase, insulin is secreted.
glucose level decrease, glucagon is secreted
Answer:
Single-cell organisms
Explanation:
In 1735, Linnaeus introduced a classification system with only two kingdoms: animals and plants. Linnaeus published this system for naming, ranking, and classifying organisms in the book "Systema Naturae". In the epoch that Linnaeus created this system, single-cell organisms such as bacteria and protists were almost unknown. In 1866, E. Haeckel added a category including both bacteria and protozoa, thereby adding a category formed by single-cell organisms (different from animals and plants). During the 1900-1920 period, bacteria were classified as a separated kingdom named 'prokaryotes'. The current three-domain classification system was introduced by C. Woese in 1990. In this system, all forms of life are divided into three different domains: archaea, bacteria, and eukaryote domains (this last composed of protists, fungi, plants and animals).
The correct answer is - 1) inverted pyramid, with a narrow base representing a small number of young individuals.
The populations that are decreasing are usually population in countries that are highly developed. The conditions for living are excellent, the medical care on high level, life expectancy very high, but the birth rates very low.
In this type of conditions, there's smaller and smaller number of young individuals, with the middle aged population being much bigger, and the older population being constantly on the rise. This will give the age-structure histogram a reverse shape than what it is supposed to have, it will be similar in appearance like a inverted pyramid, meaning that the population is aging and that it will be constantly on a decline in the future.
Answer:
<em>Trepa</em><em>nation</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>pro</em><em>cess</em><em> </em><em>whereby</em><em> </em><em>a</em><em> </em><em>hole</em><em> </em><em>is</em><em> </em><em>drilled</em><em> </em><em>into</em><em> </em><em>the</em><em> </em><em>hum</em><em>an</em><em> </em><em>skull</em><em>,</em><em> exposing</em><em> </em><em>the</em><em> </em><em>dura</em><em> </em><em>mater</em><em> </em><em>to</em><em> </em><em>treat</em><em> </em><em>heal</em><em>th</em><em> </em><em>probl</em><em>ems</em><em> </em><em>related</em><em> </em><em>to</em><em> </em><em>the</em><em> </em><em>intracra</em><em>nial</em><em> </em><em>disea</em><em>se</em><em> </em><em>of</em><em> </em><em>the</em><em> </em><em>hu</em><em>man</em><em> </em><em>bod</em><em>y</em><em>.</em>
Explanation:
Trepanation is used to treat health problems associated with intracranial diseases, epileptic seizures, migraines and mental disorders by relieving pressure.
