11.) Is the letter choice "A.)".
An ecosystem can be described as a community of animals, plants and bacteria that interact with one another.
This can be proved in paragraph 2;
"Ecosystems also can be thought of as the interactions among all organisms in a given habitat."
12.) Is the letter choice "C.)"
Land development.
This can be proven in paragraph 2;
"Human activities can harm or destroy local ecosystems unless actions such as land development for housing or businesses are caredully planned to conserve and sustain the ecology of the area."
13.) Is the answer choice "A."
Protecting ecosystems.
This is proven (given) in paragraph 2 by summary;
"An important part of ecosystem management involves finding ways to protect and enhance economic and social well-being while protecting the physical environment."
I hope this helps!
1. Your brother, who lives in Spain, is coming to visit us, isn't he?
2. A young lady was annoyed by her boyfriend she's sensitive.
3. Every old house has its strange stories, doesn't it?
4. There's nobody here related to me.
Answer:
B
Explanation: it sounds the best
The two examples which correctly punctuate an essential expression or element in the sentence are:
Architecture, so popular with Native Americans, is still a flourishing art.
Mexico, where sports are popular, has hosted the Olympic Games at the World Cup.
Some constituents that alter a sentence are indispensable and restrict the meaning of an altered word or prhase, whereas others aren't indispensable and don't affect its meaning. The first ones are separated from the main idea using commas.
Mexico City is home to several museums that display the country’s past. Here we don't have any non essential element.
The National Historical Museum, which is in Chapultepec Castle, is concerned with Mexico’s history since the Spanish conquest. Here, information can't be ommited and in fact, shouldn't be set off with comas, since such expression contains essential information (it is not any National Historic Museum but the National Historic Museum which is in Chapultepec Castle).
I believe it's foot, i'm new please don't hurt me. Hope it helped.
