Which of the following science related statements are observations rather than opinions? select all that apply.
whaling should be banned.
cancer is the worst of all diseases.
ocean acidity was greater in 2010 than in 2000.
heart disease is the major cause of death in the united states.
fewer bees have been in my garden recently, so bee populations must be decreasing.

C and D

Ocean acidity was greater in 2010 than in 2000.

Heart disease is the major cause of death in the United States.

Explanation:

just took the question and those are the only two that are correct.

a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.