Which items originated in the Americas and became European staples as a result of the Columbian Exchange?
corn, chocolate, rice, and sugar
rice, cattle, tomatoes, gold
wheat, chocolate, pineapples, potatoes
corn, potatoes, chocolate, tomatoes

D. corn, potatoes, chocolate, tomatoes

Explanation: 100% on quiz no cap on a stack

D. corn, potatoes, chocolate, tomatoes

Explanation: 100% on quiz no cap on a stack

Thus question lacks a picture or option, but nevertheless:

Answer:

There are 3 types of friction:1) Static friction - when you apply force and the object does not move.2) Sliding friction - when the surface if the object moves on other.3) Rolling friction - when any wheel or ball moves on any surface rolling friction is applied. it is very less than sliding friction.

Options:

A. They standardize prices for commodities in global markets 

B. They streamline the process of organizational decision making. 

C. They force organizations to reach a consensus before making decisions 

D. They provide a forum for individuals to voice discontent with organizations.​

Answer:

B. They streamline the process of organizational decision making. 

Explanation:

A geographic information system (GIS) is a type of database containing geographic data (that is, descriptions of phenomena for which location is relevant), combined with software tools for managing, analyzing, and visualizing those data. In a broader sense, one may consider such a system to also include human users and support staff, procedures and workflows, body of knowledge of relevant concepts and methods, and institutional organizations.

Answer:

The article states that the Incas developed knowledge of farming in the Andes region over the course of 11,000 years. This information shows that they refined their farming practices over time. The use of gravel, terraces, and canals allowed the Incas to adapt farming to the difficult terrain.

Answer:

More refugees fled Southeast Asia when Vietnam invaded Cambodia in 1979 to overthrow the murderous regime of Pol Pot. Thousands of refugees from that unhappy land began to escape over the border into neighboring Thailand.

Also the majority of Vietnamese came to Victoria after the Communist government took over their homeland at the end of the Vietnam War. Those already in Australia were offered permanent residence, and refugees began to be admitted through resettlement camps based in South East Asia.
 

Answer:

When birds are hungry, they will peck unripened fruit. Also, if there is no other fruit around, the birds might go after unripened fruit. Heavy bird pecking can be used as an indicator that it's ready to start harvesting.

Birds need food to eat, and plants need to disperse their seeds. Fruit-eating animals are called frugivores, and birds are the most important frugivores of all. More than 300 trees, shrubs, and vines in North America have small fruits that depend on birds for seed dispersal.

Quito (B)

Explanation:

The valley of Guayllabamba River where Quito lies is flanked by volcanoes, some of them snow-capped, and visible from the city on a clear day. Quito is the closest capital city to the equator.

1. Which limiting factor(s) in this lab simulation are biotic?

Limiting factor is resource/condition that could limit the growth or the population of an organism in the ecosystem. Some factor could be deleterious(like predator) and reduce the population while other could be advantageous(like food) and increase the population. The biotic factor consist of living things.

The biotic factor in this simulation would be alligator and the mosquito.

2. Which limiting factor(s) in this lab simulation are abiotic?

Abiotic factor  consist of nonliving things. The non-living factor in this scenario would be the pollution. Increased pollution could damage all the biotic factor and might limit them. The damage might not be equal as some organism could be more sensitive to the pollution than the other.

3. Which limiting factor impacted the cricket frog population the most? Use evidence to support your answer.

I would say that the predator/alligator is limiting factor that impacted the cricket frog population the most. If you compare the condition of simulation 1 and simulation 2, alligator population is the one that undergo highest change. The population increased by 40,000 in simulation 1 and decreased by 35,000 in simulation 2.

4. Which limiting factor impacted the cricket frog population the least? Use evidence to support your answer.

I think the pollution is the limiting factor impacted the cricket frog population the least. The changes of the pollution number is least when compared to other factor. It doesn't change in simulation 1. The pollution decreased by 15,000 in simulation 2 while the alligator decreased by 35,000 and the mosquito increased by 35,000

5. Mosquitoes can carry and transmit disease to animals and humans. Explain how the cricket frog plays an important role in limiting the spread of mosquito-borne illnesses like West Nile virus and malaria.

The frog predate the mosquito, so the population of frog will decrease the population of the mosquito. The mosquito borne illness is transmitted by the mosquito that contact the pathogens. If the population of mosquito decreased, there will be less mosquito that contact the pathogens. There will be less mosquito that transmit the disease too.

6. Predict the long-term effects of these limiting factors on the cricket frog population in the pond ecosystem.

Increase in predator population will decrease the population of food, and if the food start to decline the predator population will be decreased. Their interaction will prevent the population of one factor to become too big.

In long term, these factors will achieve a stable range. Unless there is a new limiting factor that cause changes in their interaction, the population should be kept at the stable range.