Answer:The reason that reefs are dying is human activity in some pleases
Explanation:
The flu is a virus that attacks your immune system when you are sick. While the flu virus is attacking however you start to get the regular symptoms of getting sick such as a feaver, coughing, vomiting and other things. But the reason why those things happen is because that is the reaction your body is giving off while your immune system is fighting off the virus. Which is why those symptoms stop when you get better.
Answer:
taiga, temperate deciduous forest, savanna
For any terrestrial planet in the solar system, the core would be the densest layer, and the crust would be the least dense layer.
Answer:
True
Explanation:
Animals can be categorized into 3 based on body symmetry
- <em>Those without any body symmetry (asymmetrical)</em>
- <em>Those with bilateral body symmetry (bilateria)</em>
- <em>Those with radial body symmetry (Radiata)</em>
Animals can be categorized into 2 based on number of embryonic germ layer;
- <em>Those with two layers - endoderm and ectoderm (diplobastic)</em>
- <em>Those with three layers - mesoderm in addition to ectoderm and endoderm (triploblastic)</em>
Animals can be categorized based on presence/absence of body cavity or coelom;
- <em>No body cavity - acoelomates</em>
- <em>False body cavity - pseudocoelomates</em>
- <em>True body cavity - coelomates</em>
Animals can be categorized into 2 based on characteristics of embryonic development;
- <em>Deuterostomes</em>
- <em>Protosomes</em>
