Which land ecosystem depends on a good root system?

a. tundra

b. desert

c. forest

d. grassland

What Chemical is left over after glycerol and fatty acids are joined?

Which of the following statements is true? Antibodies for chicken pox are useful in fighting pneumonia. Swollen lymph nodes in the throat can indicate an infection. Passive immunity can be developed through immunization.

The photo shows a bright, looping projection which extends from the surface of the sun. Some of these can last for several months. This projection is called the A) corona. B) solar wind. C) photosphere. D) solar prominence.

True or false: oceanic crust is denser then continental crust because it is comprised of silica.

What is black dog syndrome?

Which behavior was most likely inherited rather than learned? A. a student writing his name on a piece of paper B. a dog begging for food at the dinner table C. a chimpanzee using a stick as a digging tool D, a camel seeking shelter from the hot sun

Which soil would you expect to be better developed the soil on a hillside or on a valley floor

Most cells of the human body directly receive a variety of endocrine secretions through the activity of which system Select one: a. reproductive system b. digestive system c. circulatory system d. nervous system

Identify which questions can be answered through science and which cannot.

Two rows of transition metals are placed at the bottom of the periodic table to save space. elements in the first row are called what