What characteristic is shared by birds, salamanders, and sharks?

A. Four limbs

B. Jaws and paired appendages

C. Endothermy

D. Lungs

A softening of cartilage in the knee, usually around the patella, is called a. chondromalacia. b. a neuroma. c. tendonitis. d. meniscus.

Which of the following is not a mammal? a. mole c. sloth b. anteater d. none of the above

What does a sperm cell contribute to an embryo?

How are alleles alleles and traits related?

What is the term for the circular movement of material inside Earths mantle? A. Density B. Convection C. Conservation D. Equilibrium

In a text area below compare and contrast a cell membrane and a cell wall

Which is an advantage of sexual reproduction? a. two parents are required. b. only one parent is required. c. it leads to genetically diverse offspring. d. it leads to genetically identical offspring.

How are three different types of consumers alike and how are they different

What do a door and a venus flytrap leaf have in common

Where would be the best place to find an alpine glacier A) Antarctica B) Greenland C) the Himalayas D) the North Pole