How did climate play a role in human migrations between 70,000 and 50,000 years ago?"     Intervals of heavy rain prompted humans to settle in North Africa     Drying/drought in northeast Africa pushed humans to migrate into Eurasia     A highly variable climate lead to local extinctions of human populations     Humans did not undertake significant migrations out of Africa in this interval

Q: how does surrounding temperature and pressure effect specific heat of fossil fuel

A: Specific heat of fossil fuel simply refers to the amount of heat a fossil fuel releases when it burn...

Q: What is water compartment? Identify and discuss different types of water compartments and its unique...

A: Earth is a terrestrial planet. This means it has a rocky surface primarily made up of silicate rocks...

Q: During secondary succession, which of the these best describes why decomposing pioneer plants give w...

A:  I think option d will be the correct answer.

Q: 64) S-waves travel faster than P-waves. T F

A: Earthquakes are shaking of earth's surface. They are caused by seismic waves formed due to energy re...

Q: Which of the following is an argument for defining the start of the Anthropocene?     The Indu...

A: Anthropocene defines a geological time period that explains recent time in the earth previous histor...

Q: Explain why areas of precipitation tend to be associated with convergence in the lower troposphere a...

A: The term troposphere  was first given by Teisserence de Bort. It means" region of mixing".  Troposph...

Q: 69) Alfred Wegener proposed the hypothesis of continental drift. T F

A: The given statement is correct. 

Q: Which star is a yellow giant star that is brighter, but cooler than the Sun?

A: Stars are one of the important components of the galaxies. They are large astronomical bodies that a...

Q: Identify and differentiate the different layers of the atmosphere and its unique features.

A: The Earth is made up of four spheres known as lithosphere, atmosphere, hydrosphere, and biosphere. A...

Q: If you were to choose between saving the giant panda from extinction and saving shark species which ...

A: The ecosystem is the geographical area where the living organisms live and interact with each other ...

Q: A. Choose the appropriate letter from the second column that match the appropriate word in the first...

A: Column 1 Column 2 1 AE 2 P 3 AC 4 G 5 I 6 E 7 D 8 AG 9 X 10 T 11 AG 12 P 1...

Q: Which of the following is true about the land sink of carbon?     The land is not a significant ...

A: The earth's system is sub-divided into 4 other systems, namely the atmosphere, biosphere, lithospher...

Q: Calculate the azimuth of the Sun at rising on midsummer’s day at Stonehenge (latitude 51 ◦ 10 ' N) ...

A: Azimuth angle is measure of the angle from north position. This calculations are able to determine t...

Q: What are some ways in which salt loading can be reduced? What is NUTRIENT LOADING and EUTROPHICATION...

A: Salts are halides i.e., components made up of the seventh group elements. Salts are ionic compounds ...

Q: Volcanic and other such activity at the mid-Atlantic ridge extrudes material to fill the gap between...

A: Our current map of seven continents has not changed since its first creation. It seems the continent...

Q: What are best practices for the safe disposal of cell remnants?

A: Cell remnants consist of macrophages that defend the body, or early cells that later die and whose s...

Q: Why Biostratigraphy is independent of Lithostratigraphy?

A: Stratigraphy is the branch of geology that studies the formation, evolution, and relative ages of di...

Q: Write the Evidence(What fact, documentation or testimony was used?) of/from the statement and also t...

A: Climate is not a stable thing but in fact it always keeps on changing. Climate change is a long-term...

Q: 90) Sodium is a positively charged ion where it requires only an electron to complete its outmost sh...

A: Minerals are naturally occurring substances that have a specific chemical composition and a fixed ph...

Q: 103) Plagioclase can be sodium-rich and calcium-rich. T F

A: Minerals are naturally occurring substances that have a specific chemical composition and a fixed ph...

Q: What is the importance of Science Communication? Is it essential today especially in the case of COV...

A: Those activities related to information exchange, which occur mainly among scientific researchers im...

Q: Climate change is one of the most important issues facing us today. Scientists have shown that start...

A: Climate is the long-term average of the weather over almost 30 years. The primary factors of climate...

Q: 84) The streak of Hematite is red, while the streak of magnetite is black. T F

A: Minerals are naturally occurring solid chemical compounds that have a fairly defined chemical compos...

Q: What contaminations are outside the safe range for the subsurface city site?

A: Contaminations are the accumulation of the sediments seen in a region. Basically surface mountain st...

Q: Please help on the first box here is the evidence

A: The water cycle is the cyclic movement of water through the different spheres of the earth. It is an...

Q: The book of Hebrews contains 5 warnings. One of these warnings is O Don't repay evil with good. O Do...

A: The option b will be the correct answer.

Q: 7.       Define Reservoir. Give the source for the definition.  8.       What is the importance of ...

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question s...

Q: Studies on the 2 barnacles Balanus and Chthalamus on intertidal rocks showed that: O a. The 2 specie...

A: By analysing the question, We need to tell what did 2 barnacles Balanus and Chthalamus on inermidial...

Q: Q. What reducing agents should be used to obtąin the desired target molecules? H3C H, OH OH H2 CH2 C...

A: The answer to the following question is-

Q: Climate change is one of the most important issues facing us today. Scientists have shown that start...

A: Climate is the long-term average of the weather over almost 30 years. The primary factors of climate...

Q: What is the sori description of Sword fern? Based on the text given.

A: A sword fern can be simply defined as a fern comprised of long, elongated, and tilted fronds and its...

Q: Political boundaries do not always match environmental boundaries. What determines where water flows...

A: Earth is a terrestrial planet. This means it has a rocky surface primarily made up of silicate rocks...

Q: Part A A CD test is performed on a sample of clean sand. The confining pressure is held constant thr...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: B. Answer only Three Questions of the following four Questions 15 points) (approx. time: 15 mints/qu...

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question s...

Q: Recent global warming has been caused by the sun. To what extent do you agree or disagree with this ...

A: Global warming is the process when there is a rise in global temperature and that has negative impac...

Q: I. Multiple Choice Directions: Write the letter of the correct answer on the space provided before e...

A: Note- Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question...

Q: Discuss how conservation buffers and agroforestry practices improve indicators of soil quality

A: The conservation buffers and agroforestry practices are two of the efficient methods that are common...

Q: How does melting ice affect climate change?

A: Climate is the average weather pattern of a region. It is the average of almost 30 years of weather ...

Q: What was the average concentration of CO2 in the Earth's atmosphere for ~ 880,000 years, prior to 17...

A: The mean level of atmospheric carbon dioxide in the period the 1750s are about 280 ppm. Follow that ...

Q: Make a simple and hydrologic cycle. (In ur own)

A: Water is an essential element in terms of life sustainability and without the presence of water, lif...

Q: 44. The sun is the largest object in the a) solar system b) galaxy c) galactic neighborhood d) unive...

A: Note We’ll answer the first question since the exact one wasn’t specified. Please submit a new quest...

Q: 63) Phyllite is a metamorphic rock type. T F

A: This is true.

Q: how would an increase in the availability of a resource that was limiting the herbivore population s...

A: The ecosystem is the geographical area where the living organisms live and interact with each other ...

Q: The earth is becoming warmer and warmer. How likely is it that this trend will continue and what are...

A: By analysing the question, We need to why The earth is becoming warmer and warmer. Below you can fin...

Q: What type of star is very small and dense and was created after a supernova of a massive, huge star?...

A: Neutron stars are well known for their high density. They have also a small size and possess greater...

Q: 93) Basaltic lava is more viscous than andesitic lava. T F

A: The Earth is made up of various kinds of rocks. These rocks begin their life cycle from the solidifi...

Q: Suppose that the world is comprised of two countries, A and B, that jointly exploit a common pool of...

A: Suppose the world is comprised of only two countries, A & B, that can jointly exploit a common p...

Q: Which of the following describes evolution as a process? a. data from biology b. causes of natural p...

A: The theory of evolution was founded by Charles Darwin and  Alfred Russel Wallace in the mid-19th, an...

Q: Sketch a mind map and brainstorm the different environmental Impacts of climate change.

A: Climate change is defined as a long-term change or transformation of average weather patterns over a...

Q: 3. Correlate the three sections below. (Note that the limestone unit is present only in sections A a...

A: A landward shift of the coastline is indicated to as a transgression, whereas a seaward move is indi...