Throughout human history, major migrations have been spurred by sharp decreases in the availability of food caused by hazards or changes in climate. For example, the —————

was the result of a drought and wind-driven erosion. The

—————

on the other hand, was caused by a fungal disease that infected an important crop.

ysosomes are membrane-bound vesicles that contain digestive enzymes, such as glycosidases, proteases and sulfatases. lysosomal enzymes are synthesized in the endoplasmic reticulum (er), are transported to the golgi apparatus, and are tagged for lysosomes by the addition of mannose-6-phosphate label.

explanation:

format change of dna.  

answer; i believe the correct answer is (sporophyte);

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.