Populations can become extinct for many reasons. Which of these occurrences may cause a population to become extinct? Choose all the
correct answers. *
acidification of the oceans results in the death of a coral reef.
a decrease in dissolved oxygen in a lake ecosystem
a decrease in the number of predator species living in an area
an increase in average ocean temperatures throughout the year for the past five years.
an extreme drought that results in 90% less rainfall than average
an increase in environmental resources necessary for the species to reproduce

Plz ! ive been stuck on this forever

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.