Down syndrome is most often the result of an extra copy of chromosome 21, a condition known as trisomy 21. the extra chromosome originates from the failure of homologous pairs to separate during gamete formation in one parent. subsequent fertilization results in a zygote with three copies of chromosome 21. which term best classifies the event in the passage above that leads to trisomy 21? a  nondisjunctionb  insertionc  crossing overd  translocation

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. threat method number of species that benefit number of years to see benefit habitat fragmentation reforestation 450 8 introduced prey species biological augmentation 150 2 which statement is an accurate explanation of the information in the table? a. biological augmentation would benefit only a few species because it is typically not very effective. b. biological augmentation would take less time to be effective because it targets the majority of prey species. c. reforestation would take the longest time to be effective because trees take several years to grow. d. reforestation would not benefit many species because most forest species live on the ground.

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph

Iwill mark brainliest and all that sha-bang. what is the function of the endocrine system? a. control longer term response in the body. b. transmit messages throughout the body. c. remove waste from the body. d. all of the above