Answer:
Chinese communities in the United States underwent dramatic change because of the Chinese Exclusion Act. Families were forced apart, and businesses were closed down. Because of the severe restrictions on female immigrants and the pattern of young men migrating alone, a largely bachelor society emerged.
Explanation:
Answer:
cable tool
Explanation:
I think thats what its called
Answer:
C. It is larger in urban areas
Explanation:
- Carrying capacity is the number or the amount of pressure of species on the earth's ecological system can bear or can carryforwards and can be sustained by giving food, water, and necessity available to the environment.
- The ecological footprint is a measure or a way to estimate the pressure on the natural resources by these species by taking in the future possibilities and limitations. Estimated in terms of the demands and the biocapacity of the ecosystem.
- <u>The urban area carrying capacity is a result of interaction of the multiple subsystems and due to the large human activities the urban areas have low levels of the carrying capacity as they are not natural settings and put pressure and huge load over resources.</u>
Answer:
A and C
Explanation:
The rock layers must have formed at different times because they contain two different biozones. The rock layer containing the trilobites must have formed before the one containing the ammonites. The key thing to note here is that the Trilobites only lived from 540 to 248 million years ago. And that the Ammonites were from 245 to 65 million years ago. So there's a 3 million year gap between these 2 different creatures where neither of them existed. So the dig where the trilobites were found has to be at least 3 million years older than the dig where the Ammonites were found. So with that in mind, let's look at the options and see what makes sense.
The rock layers must have formed at the same time because they both contain biozones. * This is nonsense no matter what dates you're speaking of. In effect it claims that all rocks that indicate life were created at the same time. So this is definitely a bad choice.
The rock layers must have formed at different times because they contain two different biozones. * This is technically incorrect since it assumes that all biozones represent an unique period of time which is incorrect. However, since the biozones represented by the presence of Trilobites and Ammonites don't overlap, it is true that these these rock layers were formed at different times. I would have preferred if this option said "non overlapping biozones". But on the balance, I'd consider this option to be true, so it should be selected.
The rock layer containing the trilobites must have formed before the one containing the ammonites. * This is definitely true since the last Trilobite died about 3 million years before the first Ammonite lived. So this is a correct choice.
The rock layer containing the trilobites must have formed after the one containing the ammonites.
* This is the opposite of the previous option. And since the previous option was true, this option must be false. So this is a bad choice
