Which of the following is an example of a simple endocrine pathway?
a. prouth regulation be the producten nach harmone
meta con bure thyr
c. release of secrein by endere cels in duodenum due to low, pH
d. antidiuretic romane secretion de rosterior prutar in response to blood osmolaly​

The body is protected against harmful flu viruses by

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

20 point pls brianliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?