A plant that normally has relatively few, long internodes develops short and more frequent internodes. Which of the following is the most likely factor in this?
A. the growth is high on the plant
B. the growth is late in the season
C. the growth is a response to high levels of light
D. the growth is early in the season

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

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?

In two sentences explain the differences of neutrophil and macrophage