What event starts an action?

A: Habit

B:Trial and Error

C:Response

D:Reflex

E:Stimulus

I have more questions that I will put in comments.

Vertebrates share many physical characteristics. All vertebrates A. have an internal skeleton that includes a backbone or spinal column. B. have a thick exoskeleton but not an internal skeleton C. have neither an exoskeleton nor an internal skeleton.

One organism benefits while the other is killed. Two species need the same resource, which is limited.

Holly is a healthy woman who is 22 years of age. using this information, calculate her target heart rate zone for moderate-intensity physical activity.

Why do lichens and mosses get mostly replaced by larger plant species during succession

Which body system is most like the cell wall?

What is the taxonomy of each organism from largest to smallest grouping? List or organisms: brown bear, gold fish, honey bee, fruit fly.

Choose the definition of: Invertebrates A. have a backbone B. having lost a backbone C. Having no backbone D. having several backbones

Imagine you are cutting a bagel (one of the most common household injuries) and you get a cut. The cut heals. How do the new cells compare to the original (pre-cut) cells

Which bacteria is Acid-fast?

Cómo clasificarías la Adenina