What will happen to the animals in the third tropic level in a food web if the numbers of producers is reduced? Explain short and long term impacts.

Women who take fertility drugs to assist in becoming pregnant have increased chances of giving birth to a. monozygotic twins. be. a down syndrome child. c. a turner's syndrome child. d. dizygotic twins.

Recessive sex-linked traits such as color blindness appears less frequently in females because A Females have fewer sex chromosomes B females do not carry alleles for sex-linked alleles C females do not transmit sex-linked alleles D females inherit

The kidneys filter 2of blood every hour

Which of the following is a global economic issue? O A. The leader of a profitable company has retired. O B. One country has more tourism than another. O C. Many countries are increasing their use of fossil fuels. O D.

How many food calories can a human burn up in an hour by exercising at this rate? (remember that only 20.0 % of the food energy used goes into mechanical energy.) ?

Match the staining techniques with their purpose. A Negative stain such as India ink or Congo red. B The Gram stain C The Ziehl-Neelsen Acid-fast stain D Simple stain with a basic dye E The Schaeffer-Fulton Endospore stain Stain microbes a bright

Sandy puts a paper clip on the table and puts a magnet near the paper clip. The paper clip begins to move. What type of forces are acting on the paper clip?

Which statement is an example of absolute age? 1) Dinosaurs lived a long time ago 2) Trilobites lives before dinosaurs 3) Teachers are old 4) Dinosaurs went extinct 65.5 million years ago

Identify the structure in the cell that will produce atp from the starch building blocks

True or false: plant cell cytokinesis is different from animal cell cytokinesis because the contractile filaments found in plant cells are structures composed of carbohydrates and the cleavage furrow in animal cells is composed of contractile