1.WHAT IS THE HUMAN SEX CHROMOSOME FOR MALE?
A.XX
B.YY
C. XY
D.XZ

2.WHICH DO YOU THINK IS THE BIGGEST PROBLEM FACED BY ENDANGERED SPECIES?
A.FOOD
B.WATER
C.CLIMATE CHANGE
D.HUMAN ACTIVITIES

3.WHICH ARE THE ORGANS OF THE RESPIRATORY SYSTEM?
A.LUNGS,HEART,AND BLOOD
B.RIB CAGE,DIAPHRAGM,AND LUNGS
C.NOSE,LUNGS,HEART,AND DIAPHRAGM
D.LUNGS,THROAT,AND PASSAGEWAYS THAT LEAD TO THE LUNGS

4.HOW DO THE RESPIRATORY AND CIRCULATORY SYSTEMS WORK TOGETHER?
A.THEY SUPPLY THE BODY'S CELLS WITH OXYGEN
B.THEY ARE RESPONSIBLE FOR THE MOVEMENT OF THE BODY
C.THEY BREAK DOWN FOOD INTO ENERGY AND ELIMINATE WASTE
D.THEY SEND CHEMICAL SIGNALS THROUGHOUT THE BODY VIA HORMONES

5.WHICH IS NOT AN EXAMPLE OF INCOMPLETE DOMINANCE?
A.A PINK FLOWER PRODUCED FROM RED AND WHITE FLOWERS
B.A FLOWER THAT IS BOTH RED AND WHITE PRODUCED FROM RED AND WHITE FLOWERS
C.CURLY-HAIRED AND STRAIGHT-HAIRED INDIVIDUALS PRODUCING WAVY-HAIRED OFFSPRING
D.A HIGHLY SPOTTED DOG AND A NON-SPOTTED DOG PRODUCING PUPPIES WITH A FEW SPOTS​