Answer and Explanation:
The Explorers Club is an American-based international multidisciplinary professional society with the goal of promoting scientific exploration and field study.
Which event was a major source of atmospheric oxygen?
photosynthesis
volcanic eruptions
decomposition of water
outgassing
Answer:
Photosynthesis was a major source of atmospheric oxygen.
Explanation:
Earth's atmosphere was not the same as it is in the past. For a larger portion of Earth's history, the atmosphere actually didn't have an atmosphere or the one it had was not suitable for complex lifeforms to develop. This all changed because of one major event, the process of photosynthesis.
Initially, it was the cyanobacteria that started to use this process in order to produce their own food and energy. Basically, this process meant that the cyanobacteria, and a lot of later organisms, were taking in carbon dioxide, use it for their own needs, and release the oxygen. The oxygen was released into the ocean and into the atmosphere, which resulted in a gradual change in the composition of the atmosphere to a degree where it was suitable for larger organisms to start to develop.
1. What is the elevation of point "C"?
A. 170 m
B. 160 m
C. 130 m
D. 20 m
E. 50 m
2. Which side is steeper?
A. North
B. East
C. West
3. What is happening between points "F" and "D"?
A. going uphill
B. going downhill
Answer:
a 170 elevation of c
west is steeper
a going uphill
Explanation:
i love geology
i so good at topographic maps
Geographical information can appear in books called (calendars\sonneteers\journals\gazetteers). These books list locations such as countries or cities, and they include (telephone numbers\social statistics\historical background) for each location.
Answer: Gazetteers and Historical background
Explanation: Good luck! :D
How much does a fish cost in China?
Answer:
34 Renminbi
Explanation:
Select the correct answer.
Which type of work was the main occupation during the Xia dynasty?
O A. Jade works
OB. fishing
O c. agriculture
OD. selling of pottery
Reset
Next
Answer:
B- Fishing
Explanation:
Fishing was a phenomenal and a very helpful way of providing food. and how many eat and so starving since it was so easy to catch fish. I hope I helped! (I just learned about this awhile ago in my history class)
Which part of the South American continent is suitable for the
practice of agriculture? Why?
Brazil
Explanation:
They have abundant land and a significant labour force
A group of people in a particular area that have a strong sense of unity based on a set shared beliefs is a -
Answer:
nation
Explanation:
Which statement accurately describes plate tectonics?
Pieces of the lithosphere move quickly and constantly.
The motion of subduction drives plate movement.
When one plates slides under another, it is called a convection current.
The lithosphere is broken into sections called plates.
Answer: the lithosphere is broken into sections called plates, there are 2 main types of plates: continental and oceanic
Answer:
the lithosphere is broken into sections called plates, there are 2 main types of plates: continental and oceanic
Explanation:
This country is an island
Saudi Arabia
Kuwait
Bahrain
United Arab Emirates
Who was the first person to ever walk the Earth?
Answer:
Adam(Biblical), No one knows(Logic)
Explanation:
If you're looking for a Biblical answer, the answer will be Adam. If you're looking for more of a Logical answer, the answer is...no one knows.
what is occurring with molecules when a substance is freezing ?
Answer:
Freezing is the process that causes a substance to change from a liquid to a solid. Freezing occurs when the molecules of a liquid slow down enough that their attractions cause them to arrange themselves into fixed positions as a solid.
B
A
N
S
С C
D
Which point on the diagram best represents the positions of the Earth and the
Sun when it is summer in North America?
A
Point A
Point B
с
Point C
D
Point D
Which is a major reason that Central Asia has been conquered repeatedly?
A. The flat terrain made it vulnerable to attack.
B. Portugal and Spain wanted control of the Silk Road.
C. China and Australia battled for control of its resources.
D. The climate there made nomadic lifestyles impossible.
ITS A!
Answer:
so you jus answered your own question?
Explanation:
The flat terrain made it vulnerable to attack.
Why was Central Asia conquered often?Periodically, tribal leaders or changing conditions would cause several tribes to organize themselves into a single military force, which would then often launch campaigns of conquest, especially into more 'civilized' areas.
What is the history of Central Asia?The human occupation of Central Asia dates back to the late Pleistocene Epoch, approximately 25,000 to 35,000 years ago, but the first identifiable human groups to live there were the Cimmerians and Scythians (1st-millennium BCE) in the west and the Hsiung-nu people (from 200 BCE) in the east.
Learn more about Central Asia here https://brainly.com/question/5035122
#SPJ2
what four major seas border Russia?
'Cube'ism
As an artist, Ernest is doing a solo show titled CUBES. One of his pieces is
shown below. Each layer of the piece is a cube. The bottom cube has a side
length of 3 m, the middle cube has a side length of 2 m, and the top cube has a
side length of 1 m. The top two layers are each centred on the layer below.
Ernest wishes to paint the piece. Since the piece will be suspended in the air, the
bottom will also be painted. Determine the total surface area of the piece,
including the bottom.
Answer:
jj
Explanation:
Answer:
74
Explanation:
Which religion is most widespread in Western Europe?
A) Islam
B) Catholicism
C) Baptist
D) Judaism
Answer:
B. Catholicism
Explanation:
Secularization is widespread in Western Europe, but most people in the region still identify as Catholicism. Rising shares of adults in Western Europe describe themselves as religiously unaffiliated, and about half or more in several countries say they are neither religious nor spiritual.
Answer:
Catholicism
Explanation:
I took the test
The body of water that lies south of Cuba and east of Central America is the
A Gulf of California
B. Gulf of Mexico
C. Rio Grande
D. Caribbean Sea
PLEASE HURRY IM TIMED
Answer:
D. Caribbean Sea
Explanation:
The Gulf of Mexico is above the Caribbean sea so the answer must be the Caribbean sea.
Where is most of Earth's drinking water found?
A: Ground Water
B: Lakes
C: Ice Caps and Glaciers
D: Oceans
PLEASE HELP ASAP
Answer:Glaciers and Ice Caps
Explanation:
Over 68% is from grlaciers and ice caps
Answer:
I think A
Explanation:
Because they were dig into the ground & they will refill it made up of fresh water ....
Which answer best describes the continental shelf?
thick deposits of sediments carried out from land
area of land that drops toward deep ocean basins
75-mile shallow flat area just off coastlines
the surf area along coastlines
Answer:
Thick deposits of sediments carried off of the shelf/land
Answer:
B
Explanation:
took the test
What was the cause of food and other items being put into the tombs?
Answer:
Hi !
Here is your answer !
The wall paintings portraying scenes from daily life show how the food was consumed, at least among the wealthier classes. Bread and beer were staples in ancient Egypt and they are also the products most frequently found in the tombs.
(Sorry no explanation in this question)
Thank You !
Why are some micro-nutrients known as 'limiting factors ?
Answer:
Nutrients as Limiting Factors
The availability of specific nutrients dictates organismal growth by controlling and limiting activation of cellular and metabolic pathways necessary for progress. The production of necessary components if often controlled by the presence and concentration of a limiting nutrient.
How would human activities affect the migration of animals like the Christmas crabs in Australia?
Answer:
Most of Christmas Island's adult red crabs begin their breeding migration to the sea as soon as the wet season rains have established. But we can never be sure when the wet season is going to begin!
The crabs' breeding timetable is fixed around the phases of the moon. Spawning (the dropping of their eggs into the sea) must occur before sunrise on spring tides during the last quarter of the moon, regardless of any other factor. The timing of spawning is the only certain and predictable part of the whole migration; all other stages of the migration will vary with the prevailing weather.
The crabs will start their migration if there is enough time for them to complete their downward migration, mate and develop eggs before the next suitable spawning date.
The red crab breeding migration comprises a series of separate actions on the crabs' part that follow on from one to the other in a programmed sequence. These separate actions in combination make up the breeding migration and one action will not occur unless the preceding action is accomplished. If there isn't enough time for them to be able to do all of these things before the next spawning opportunity, they will delay the start of their migration and attempt to meet the following month's spawning date.
The first action that occurs is movement of crabs to the sea. The largest mass movement of crabs takes place in this first downward migration. Males farthest inland start this movement and are progressively joined by more and more crabs (both males and females) as the movement progresses toward the sea.
When the crabs arrive at the shoreline, they dip in the sea to replenish body moisture and salts. The male and female crabs then move back on to the shore terraces where the males dig burrows for mating. Mating takes place and then the males again dip in the sea and then they will start their return migration.
The females remain behind in the mating burrows to brood their eggs. This takes a couple of weeks. A day or two before the spawning date the females emerge from the breeding burrows with ripened eggs and move to the shoreline where they again dip in the sea and then retreat to shade.
Before the turn of the high tide and just before dawn the females will again move to the waterline and around the turn of the tide they will drop their eggs into the sea. After they have jettisoned their eggs the females commence their return migration.
The next phase of the breeding migration takes place in the sea. The eggs that the females drop into the sea hatch immediately into larvae. They grow through several larval stages into tiny prawn-like animals called megalops. After about four weeks the megalops emerge from the sea and they moult into baby crabs. The baby crabs then move inland and settle at suitable localities. The successful emergence of baby crabs is unpredictable but is incredible when large numbers emerge. Some years very few, or none, emerge. After about four years growth crabs will take part in the breeding migrations and the life cycle continues.
If the rains stop or peter out, the crabs will delay the start of their migration, or, if they have started migrating, they will stop moving and stay wherever they are until the rains begin again. It is rare that substantial rains will begin early enough in the year for a spawn during the last lunar quarter in October - but it has happened! Spawning in November or December are the more usual, which means that rain must commence in the preceding month and continue.
All phases of the crabs' breeding migration involve colossal numbers of crabs and usually occur all over the island. If the rains continue, there is usually a second, and sometimes even a third, smaller, downward migration by crabs that did not join in the first migration. When this happens it is possible to see crabs on return journeys mingling with the crabs on their downward migration. It can become confusing for all concerned! We are sorry that we can not be more explicit about the timing of the start of the red crab migrations, but the weather as you know cannot be accurately predicted. The best advice we can give is to be at Christmas Island during the last quarter of the moon in either November or December for the best chance of seeing something interesting happening in the annual red crab migration. If you are able to arrive earlier and to stay longer the more parts of the migration sequence you will be able to experience.
Explanation:
How do supranational organizations challenge state sovereignty?
Answer:
Supranational organizations tend to try and put their own rules and laws which the country members have to implement, which in turn means that they are becoming limited in their decision-making on a state level.
Explanation:
There are several supranational organizations in the world, and some of them are the European Union, African Union, and NATO. Even though they are all different and have their own unique characterisitcs, one thing that tends to be a common trait is that they all have their own governmental structure that tends to impose itself over the state governments.
These organizations are very lucrative and attractive for a lot of countries, but the governmental structure of these organizations also makes every member sign a lot of documents that make them obligated to respect and implement the decisions. This basically means that the country members are giving up on part of their sovereignty, and this can be best seen in the EU, where there has been a lot of problems because of it and there is an evergrowing backlash against it.
3. How much thermal energy is absorbed when 1.00 kg of ice melts completely, without a change in
temperature? The theoretical heat of fusion of ice is 6.01 kJ/mol and the molar mass of ice is 18.02 g/mol.
(3 marks)
Answer:
thanks for the points
Explanation:
Which statement best completes the diagram?
Culture of the
United States
There is a wide range
of ethnic groups
The majority of
the population
speaks English
?
Helps ASAP will give brainliest
Answer:
Correct answer is A.
Explanation:
A is the only correct answer as it is showing the implication that can be concluded from the statement about culture. A part of the culture are many popular movies and music.
B is not correct as the statement is false, as it is C and cannot be concluded from first statement.
D is also false as the music is not controlled by the government.
Answer:
A
Explanation:
Explain why the climate of the polar regions is so cold (4 marks)
Answer:
this is because the polar regions have less sun rays sticking them compared to any other regions hence the temperature at the polar region is always low
What happened around the 1700's that caused a massive global boom
Answer:
Only after something happened in the 1700s did the growth rate begin to climb, and climb, and climb. With the Industrial Revolution gathering steam, the global population growth rate jumped from around 0.02% per year in the early 1400s to 0.23% in 1600 and then 0.33% in the mid-1700s.
Explanation:
I hope it helps
you can do it!!!
People consume different kinds and amounts of food, depending on their location, activities, and available food resources.
Dietary needs and the consumption of vital nutrients varies between developed countries and developing countries.
Explain how developed and developing countries differ in food consumption and diet.
Answer:
the difference is in the nutrition of the food in developed and developing countries.
Explanation:
assumed that a country with a very low anual income or the per capita having a very low value might not have the fortune to have the consumption of every nutrient possible in there daily meal. whereas in compared with the developing countries every people is sufficient and literate and much familiar with the quantity and quality consumption so and we can see that this is the first difference between the consumption of different people in countries of two face.
Answer:
Food consumption in developed and developing countries vary in quite a few ways. There are a few reasons for this, such as income, capita having low value, and population. A country with a low annual income might not be able to buy imported goods because they are too expensive. If a developing country has a large population, they may not be able to afford food for everyone to eat. A family in a developing country may also depend on farming on their own to grow their food. Whereas developed countries can get imported goods and have largely sustained farms, factories, and cattle for food. All of this can be sold in stores for people to buy and use. This means that even if the population is large, people that can afford it can go to the store and get food. All of this has an effect on diet and food consumption. If you can afford to buy food to meet your dietary needs, your diet will be very restricted and you may not get all of the nutrients you need.
(Word count: 180)
according to the chart which of the following languages are probably most closely related to each other
greek and czech
italian and Slovak
Latvian and Ukrainian
Urdu and Hindi
Norwegian and Lithuanian
Calendars were important for Mayan civilization because they helped the Mayans determine when to
A
plant their crops
B
conduct marriage ceremonies
С
build new terraces for farming
D
conduct trade with other societies
Answer: B
Explanation: Good luck! :D
