What is the advantage of the spiral valve in the shark's intestine?

What is the function of tendril? How is the tendril of pea different from that of pumpkin?

Explain the difference between absorption and excretion.

What negative impact to the environment is caused by organic and inorganic constituents that are dissolved by rain fall A) air pollution B) soil fertility C) groundwater pollution and soil fertility

11. What is the basis for classification of bacteria?

Salmon feed on shrimp, and humans eat salmon. Which role do both salmon and humans play in this situation? A. Parasite B. Prey C. Host D. Predator

Which of the following is a sterile part of a flower? my choices are: pistil stamen sepal none of the above

What is the name of the science tha deals with taking x-rays

How do proteins travel from the endoplasmic reticulum to the Golgi apparatus? A. A part of the endoplasmic reticulum pinches off, forming a transport vesicle. B. A protective coating around the protein transports it to the Golgi apparatus. C.

Shortly after the zygote is formed, it begins the processes of duplication and division. each resulting new cell has:

Which of these planets atmospheres would be most able to support a colony of humans