Crosses in which F1 plants heterozygous for a given allele are crossed to generate a 3:1 phenotypic ratio in the F2 generation are known as

A) dihybrid crosses.
B) replicate crosses.
C) reciprocal crosses.
D) test crosses.
E) monohybrid crosses.

idk

explanation:

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d

for a different answer set the answer would be because the oxygen in the water had depleted (apex)