Match the terms to their definition. 1. homeostasis small organ attached to the brain that links the nervous system to the endocrine system 2. negative feedback an action that is caused by a stimulus 3. pituitary gland any change that occurs inside of an organism that produces a response 4. stimulus a homeostatic response to a stimulus that slows or stops the output of a system 5. response any change that occurs outside of an organism that produces a response 6. internal stimulus a change in an organism's environment that produces a response 7. external stimulus the maintenance of a relatively constant state in the internal environment of an organism

Which of the following is an example of competition that could be found in a forest? question 14 options: deer eat berries and their droppings seed new areas creating more berry bushes two fox populations utilize the same rabbit population as their main food source two hawk populations utilize the same scorpion population as their main food source lack of sunlight due to changes in the seasons restricts the growth of certain plants

In which squares should the phrase "green pods" appear a) a and d b) b and e c)a,c, and d d)a,b,c,d and e

Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?