what is the most important era in which mammals appeared ?
O Cenozoic
O Mesozoic
O Paleozoic
O Precambrian

Answers

Answer 1

Answer:

In my opinion I think that's it's number 4

Answer 2
The answer is number four, precambrian!! :)

Related Questions

What was the name of the 18th and 19th century trade route shown in the map above?

Answers

Answer:

you didnt show the " map above " how are we supposed to answer this ish

u didnt show what map it is lols

Which structure is found in the cytoplasm of a typical plant cell? A.vacuole B.cell wall C.chloropast D.cell membrane​

Answers

Answer:

I think it's cell membrane

not sure....

The structure that is found in the cytoplasm of a typical plant cell is the cell membrane.

What is cytoplasm?

The plant cell is filled with a thick fluid that fills each cell and is circumcised by the cell membrane. It is made up of salts, water and proteins.

It is located between the nucleus and cell membrane inside the cell wall of a plant cell. The structure found in the cytoplasm of a typical plant cells, the cell membrane​.

Therefore, option D is found in the cytoplasm of a typical plant cell

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Look around your area and find an example of the breakdown of rocky materials or the transportation of materials. Describe the process that you are observing. Determine if the continuation of that process will have a positive or negative effect on the surrounding area. Lastly, how can the process be slowed, stopped, or altered to produce a positive (or at least non-negative) impact

Answers

Answer:

The physical environment is made by the weathering and mass wasting

Explanation:

The process of break down the rocks is known as weathering and its takes place in physical, chemical ad biological methods. The mechanical weathering or physical weathering were in the rocks are weathered have a positive impact on the plant growth but may have a negative impact in term of soil erosion. The may lead to sheet erosion etc. This process can be solved or stopped by the plantation of more trees and plants that check soil removal by wind and water.

Give a comparitive analysis of teritary commercial activities in the deverloped and developing countries

Answers

Answer:

Similar commercial activities are present.

Explanation:

Similar commercial activities such as Laundry services, Fast food chains and Insurance services occur in both developed and developing countries because these activities are necessary for the survival and growth of the society and its people. These commercial activities provides employment to thousands of people as well as easiness to the customers who avail these services so that's why we can say that similar commercial activities are present in both developed and developing countries.

what are human settelments

Answers

In geography a human settlement is a locality or populated place is a community in which people live.

Can someone help me in this question:

What is the greenhouse effect, and give two reasons why global warming can be described as a world problem?

Answers

Answer:

The greenhouse effect in simple terms is the warming of Earth's surface.

One way it can be described as a world problem is the melting of ice in Antarctica, because of global warming, the ice is slowly melting, killing lots of animals.

Another way it can be described as a world problem is that the global sea level is rising. Because of these melting ice-caps, sea level is slowly rising and could potentially flood some cities or towns in the next few years.

calculate population density

population=300
Area (km)2 = 40
population density=?

Answers

decimal form

7.5

exact shape

15/2

mixed number form

Terracing, contour farming, intercropping, and crop rotation all ________. Group of answer choices are techniques for conserving soil resources and fertility contribute to leaching contribute to erosion and desertification are prohibited in organic farming are aspects of IPM

Answers

Answer :

are techniques for conserving soil resources and fertility

Explanation :

In simple words, Planting multiple crops in appropriate combinations throughout the identical field is known as intercropping. Crop rotation is the process of changing the crops cultivated on a farm from one harvest to the next. On steep hillsides, terracing provides flat floors for plants to collect rainfall and decrease desertification.

Which Kepler laws of planetary motion would be useful in making it to another planet.

Answers

They describe how (1) planets move in elliptical orbits with the Sun as a focus, (2) a planet covers the same area of space in the same amount of time no matter where it is in its orbit, and (3) a planet's orbital period is proportional to the size of its orbit (its semi-major axis).

The area of a rectangle is 342 square units. Its length measures 19 units. Find the
length of its diagonal. Round to the nearest tenth of a unit.

Answers

Answer:

The length of the diagonal of the rectangle is approximately 26.2 units.

Explanation:

From Geometry we remember that the area of the rectangle ([tex]A[/tex]), in square units, is described by this formula:

[tex]A = w\cdot l[/tex] (1)

Where:

[tex]w[/tex] - Width, in units.

[tex]l[/tex] - Length, in units.

If we know that [tex]A = 342\,u^{2}[/tex] and [tex]l = 19\,u[/tex], then the width of the rectangle is:

[tex]w = \frac{A}{l}[/tex]

[tex]w = \frac{342\,u^{2}}{19\,u}[/tex]

[tex]w = 18\,u[/tex]

And the length of the diagonal ([tex]d[/tex]), in units, is determined by the Pythagorean Theorem:

[tex]d = \sqrt{w^{2}+l^{2}}[/tex] (2)

If we know that [tex]w = 18\,u[/tex] and [tex]l = 19\,u[/tex], then the length of the diagonal is:

[tex]d = \sqrt{(18\,u)^{2} + (19\,u)^{2}}[/tex]

[tex]d \approx 26.2\,u[/tex]

The length of the diagonal of the rectangle is approximately 26.2 units.

19. The Eastern Roman Empire lasted in one form or another until
a. Constantinople was captured by the Ottomans.
b. Charlemagne was crowned Holy Roman Emperor
c. Viking raiders ended it.
d. The Grillat Schism in 1054

Answers

Answer:

A. Constantinople was captured by the Ottomans

Explanation:

Have a good day :)

As a result of conflict over who would rule North Africa in the 1800s, European
colonial powers drew
geometric boundaries.
governance contracts.
territorial lines based on natural features.
borders in hieroglyphics.

Answers

Answer:

The answer is geometric boundaries.

As a result of conflict over who would rule North Africa in the 1800s, European had geometric boundaries.

What are geometric boundaries?

Geometric boundaries are region or places after which an individual country or nation cannot extend to in terms of ownership.

A nation stays within it boundary and not go beyond.

Therefore, As a result of conflict over who would rule North Africa in the 1800s, European had geometric boundaries

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Let's talk about geography of the united states

Where is it located, what are its limits, what is its climate, the way of life of its inhabitants, mountains etc.

Answers

The United States is located in North America in the Western Hemisphere. It spans a large amount of the continent, so it covers many areas with unique climates.

The Northeast has a lot of forest cover, and encounters very diverse climates throughout the year, from bitter winters to blistering summers, and have even experienced hurricanes.

The Southeast is generally mild, and experiences warm weather year round. The further south you go, the warmer it gets. You also see more bayous and swamps in the south. The northern ends of the Southeast such as North & South Carolina can experience some snow and colder weather in the winter.

The Midwest is also mild, and generally flat, which makes it ideal for agriculture.

As you go west, you will find more mountainous regions, as well as arid desert landscapes. The Southwest is the pinnacle of these desert landscapes, seeing hot weather in the day, and cold weather in the night, with high temperatures year round.

And finally, the Northwest is a mild climate, with high mountains and abundant rain.

Which religion established the concept of monotheism?

A - Islam
B - Judaism
C - Christianity
D - Buddhism

Answers

Answer:

Judasim was the religion who established the concept of monotheism

Answer B

Which renewable resources are found on the smaller islands of Oceania? (Choose all correct
answers.)
Wind energy
Solar energy
Geothermal gas
Water for hydroelectric power

Answers

Answer: The renewable natural resources that can be found on the smaller islands of Oceania are wind and solar energy.

why is time advanced in east and backward in west give reason​

Answers

Answer:

It is a simplified view of the earth's rotation because the tilt of the earth's axis with respect to the plane of the earth's orbit means that sometimes sunrise occurs slightly earlier or later along the same longitude.

Air masses move from areas with high pressure (such as the poles of the Earth) to areas with low pressure (the equator). The temperature and moisture of an air mass depend on where it is formed. A maritime tropical air mass is _______ and _______.

Answers

Answer:

Warm and moist.

Explanation:

Airmass is a large body of air it covers hundreds of meters. It moves due to global air circulation. It changes the weather, temperatures, and humidity of the air. Also creates weather disturbances. A maritime tropical air mass forms near the poles and is a mass of warm, moist, and unstable air. It originates in subtropics of the pacific ocean.

Answer: Warm and moist.

Explanation:

Explain the rock cycle with the help of diagram and how does weathering affect the rock cycle.​

Answers

The rock cycle is a basic concept in geology that describes transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. Each rock type is altered when it is forced out of its equilibrium conditions.
Forces like wind and water break down rocks through the processes of weathering and erosion. Weathering is the process that breaks down rocks. ... Weathering and erosion help shape Earth's surface. They are part of a process called the rock cycle.

Answer:

Sedimentary - A rock formed as a result of the weathering process, either by compaction and cementation of rock mineral fragments, or the precipitation of dissolved minerals. ... Metamorphic - These rocks form as existing rocks are subjected to intense heat and/or pressure, usually over long periods of time.

6. Which statement best represents an economic action by North Korea?

Answers

Answer:

please include the statements that the question is referring to

The statement the best depicts the economic conditions of the North Korea is that the economy was changed to the command economy.

What is the economic action?

Economic action is defined as the coordinated actions that were occupied by a labor union and workers that were working in performance with the labor union to exert economic pressure on a company.

North Korea's economy became a centrally planned economy with a limited role for market allocation mechanisms, albeit it is growing. North Korea's underlying devotion to a centralized command economy.

Therefore, the economic action that was taken by the North Korean  was the conversion to the command economy.

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7. The United Nations Sustainable Development Goals provide a blueprint for peace and pros- perity for people and the planet. Describe how development of agriculture can contribute to the achievement of some of these goals.

Answers

Answer:

to improve skill and meantaine a agriculture goals and achive of some of these goals

The question below refers to the following graph. What is the wavelength of this wave? 10 cm 15 cm 60 cm cannot be determined

Answers

Answer:

can not be determined :)

where do earthquake occur​

Answers

Explanation:

Earthquakes occur all the time all over the world, both along plate edges and along faults. Most earthquakes occur along the edge of the oceanic and continental plates. The earth's crust (the outer layer of the planet) is made up of several pieces, called plates.

hope it helps.

stay safe healthy and happy.

Earthquake occur everywhere, nearly everytime, but they are too weak for us to detect, without any device. Plates are always moving. But sometimes it is strong and we can detect it, most earthquakes occur at the edge of plates.

write the sub region of tropical region​

Answers

Answer: subtropical

Explanation:

Deaths by traffic accident are more likely to occur in
A. high-income countries
B. middle-income countries
C. low-income countries
D. poor countries

Answers

Answer:

b- middle income countries

Ipaliwanag ang slogan
"Pagtitipid ay kailangan upang likas na yaman ay mapangalagaan at buhay ay magkaroon ng kaginhawaan"

Answers

i have no idea what this and u will have no idea what this says cuz thas a whole different language

In some parts of the country, geothermal systems can be used to heat homes. This involves a closed loop of water-filled pipes. The pipes go deep under the home in the ground. Which transfer occurs when a geothermal system heats a home

Answers

Answer:

With the geothermal system, heat moves out of the ground towards pipes filled with water.

Explanation:

The geothermal system is very efficient in promoting the heating of not only houses but also whole cities. This type of system uses the heat that naturally exists inside the earth. Thus, to implement this system, deep holes are drilled into the ground, where pipes filled with water are installed. The thermal energy of the soil will be transferred to this water, which will guide a hot vapor to the surface.

A large or small depression, or a low spot, in the land surface

Answers

Answer:

A large or small depression, or a low spot, in the land surface is called Basin.

what is moraine? , explain it.​

Answers

Answer:

Explanation:

A moraine is any accumulation of unconsolidated debris (regolith and rock), sometimes referred to as glacial till, that occurs in both currently and formerly glaciated regions, and that has been previously carried along by a glacier or ice sheet. It may consist of partly rounded particles ranging in size from boulders (in which case it is often referred to as boulder clay) down to gravel and sand, in a groundmass of finely-divided clayey material sometimes called glacial flour. Lateral moraines are those formed at the side of the ice flow, and terminal moraines were formed at the foot, marking the maximum advance of the glacier. Other types of moraine include ground moraines (till-covered areas forming sheets on flat or irregular topography) and medial moraines (moraines formed where two glaciers meet).

The type of winds that blow from 300 N or S latitude in a westerly direction are called the??

Answers

Answer:

The four major wind systems are the Polar and Tropical Easterlies, the Prevailing Westerlies and the Intertropical Convergence Zone. These are also wind belts. There are three other types of wind belts, also. They are called Trade Winds, Doldrums, and Horse Latitudes.

Explanation:

The naturally occurring motion of gases and air in the atmosphere of the planet's surface is called wind. Prevailing Westerlies blow in a westerly direction.

What is Prevailing Westerlies?

Prevailing Westerlies blows from the west direction towards the midlatitude of the planet and initiates from the polar easterlies and horse latitudes.

They are present in the middle latitude and are found between the 35-65 degrees latitude. They blow from the western region to the eastern side.

Therefore, prevailing westerlies blow from 30 degrees north or south latitude.

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An Abyssal Plain is similar to

continental shelf
the Grand Canyon
the Great Plains
Hidden Valley

Answers

The great plains i’m guessing becuade they both say plain
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