A scientist wants to come up with a solution to help minimize eutrophication as a way to maintain the lake’s natural ecosystem without eliminating any of the lake’s native populations. Which of the following would be the best solution for the scientist to implement? A.
asking the farmers in the area to only use fertilizer on their crops when it is raining or windy outside
B.
creating buffer strips around the lake using land vegetation to trap fertilizer runoff and prevent it from reaching the water
C.
treating all runoff with metal complexes that are poisonous to algae populations
D.
spraying clay on the aquatic plants so that they sink to the bottom of the lake to decompose

An organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?

Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses

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?