A) weapons for an evolutionary arms race w/ disease causing organisms
<span>The amount of goods and services produced by an economy divided by the amount of resources used to make those goods and services, measures economic D. productivity.</span>
1. blood vessels dilate
2. there is an aggregation of platelets (blood clots)
3. fibroblasts make collagen (healing agent under the skin)
4. neutrophilis consume the bacteria
5. macrophages remove the damaged tissue
6. the wound closes
hope that is right good luck
Answer:
1st is correct
Explanation:
At its simplest, a dog's digestive system is a long tunnel that runs from their mouth to the anus. Food goes in at the mouth and travels through this tube and at various stages is broken down and either absorbed into the body or excreted as waste at the anus.
B) Ecosystem - which includes the living communities and nonliving factors in an environment
