An unknown mineral can be scratched by topaz, but not by feldspar. According to the Mohs scale, which of the following best describes the hardness of the unknown mineral?   a. less than 5 b. more than 8  c. less than 8, but more than 6 d. more than 4, but less than 6

Q: 1. What are the relative ages of the features in order from oldest to youngest? A. 1, 2, 3, 4, 5 B. ...

A: The following picture is geological landform of a place or we can say outcrop A. There are certainly...

Q: 1. Identify causes of outdoor air pollution. 2. What is acid rain? What causes it, and what are i...

A: Since you have asked multiple questions, we will solve the first three questions for you. To get rem...

Q: TRUE or FALSE: Two-thirds of the skeleton is made of organic components. True False

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

Q: TOP CARNIVORES e.g. shark, dolphin, albatross HEAT ENERGY LOSS 3rd LEVEL CARNIVOROUS CONSUMERS e.g. ...

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

Q: Compare and contrast a shield volcano and a composite volcano. Use the words mafic, felsic, viscosit...

A: The volcano is a rupture in the Earth's crust through which lava, gases, and ash escape to the surfa...

Q: Which of the following statements about convection is true?     Convection occurs in the mantle be...

A: Earth is the third planet from the sun and is the only planet in our solar system that can sustain l...

Q: A sinkhole is an example of which of the following natural hazard subcategories? A. Mass movement/wa...

A: A hazard is any agent that can cause harm to humans and the environment. Risk is the possibility of ...

Q: At what point on the geographic profile does the land elevation rise above the sea level

A: Sea level is the basic level where the projection and attitude of any location can be measured takin...

Q: How does one determine if a rock is igneous, sedimentary or metamorphic? How does one identify the t...

A: Rocks on Earth are divided into three categories, depending upon their origin. They are 1) Igneous r...

Q: What line will NEVER be formed on Earth's surface if a plane is perpendicular to the Polar Axis? a. ...

A: Earth science is the study of the Earth and the various processes that are going on in the Earth sys...

Q: Why would an area that use to be forest have as fossils?

A: Fossil Fossils are the remains of ancient plants and animals. They can be parts or remains or impres...

Q: Most of the world population growth in the near future will be in ________. Group of answer choices...

A: A population is a group of individuals. A population can be of an entire nation or any community wit...

Q: Why was the Atlantic Hurricane Season of 2005 so destructive? How many tropical cyclones (named stor...

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

Q: The sun-path diagram for 27° N latitude is given below. 1. Find the altitude and azimuth of the su...

A: By analyzing the question, We need to  Find the altitude and azimuth of the sun on May 15 at 2:00 pm...

Q: A) Jupiter orbits the Sun with an average orbital radius of 5.2 au. What is the solar flux at the di...

A: Jupiter orbits the Sun with an average orbital radius 5.2 au and need to fin solar reflux. Albedo is...

Q: Briefly discuss the features (at least two, in the ocean and/or on land) that are formed at a conver...

A: The theory of plate tectonics was given by Alfred Wegener. This theory states that the earth's crust...

Q: Hydropower plants are matters of debate. Since the HPP does not emit greenhouse gas nor consume foss...

A: We are authorized to answer one question at a time, since you have not mentioned which question you ...

Q: How is planet Earth similar and different from Venus and Mars? Provide possible explanations for you...

A: Our home which is the Earth is the main spot in the universe where we know with sureness that life e...

Q: What are the Asian subcontinents, like North and South Korea, doing?

A: In the early Cenozoic era, the crust of earth was in the form of single piece and called as Pangea. ...

Q: What are the 3 kinds of seismic waves, the order that they arrive, and how they move

A: A seismic wave is generated by an Earthquake and it travels through the body and surface of the Eart...

Q: What is the definition for evolution? How is artificial selection different from natural selection? ...

A: Evolution is the development of plants, animals etc. It is slow process by which Plants and animals ...

Q: A developer builds a residential community with 350 homes on the shores of the lake shown. Describe ...

A: Water on our planet makes us unique and different from other planets. Without the presence of water,...

Q: How do physical characteristics of minerals allow for their identification? And why do minerals have...

A: Mineral A mineral or a mineral species can be defined as a solid chemical compound with a fairly wel...