A. autotrophs B. heterotrophs C. saprotrophs D. none of these The first organisms on Earth were most likely heterotrophs. These early life forms would have consumed organic molecules from their environment to obtain energy and nutrients for survival, as opposed to producing their own food through processes like photosynthesis (autotrophs) or decomposing organic matter (saprotrophs). … Read more
A. Crust B. Mental C. Core D. None of these Earth’s outermost layer is called Crust. The other layers of the earth are the mantel, outer and inner core. Crust. The crust is the outermost layer of the Earth’s surface, where we live. The thickness ranges from 0 to 60 kilometres.
A. The sun B. The Moon C. The Earth D. Venus Comets are small celestial bodies made mostly of ice, dust, and rocky material. They follow elongated orbits around the Sun. When a comet approaches the Sun, its icy surface begins to vaporize, forming a glowing coma (a cloud of gas and dust) around the … Read more
A. 105 B. 107 C. 109 D. 111 The Sun is 864,400 miles (1,391,000 kilometers) across. This is about 109 times the diameter of Earth. The Sun weighs about 333,000 times as much as Earth.
A. Coach B. Core C. Corona D. Comma Corona – The corona is the outermost layer of the Sun, starting at about 1300 miles (2100 km) above the solar surface (the photosphere).
A. Mercury B. Venus C. Mars D. The Earth Neptune is correct answer however we have to answer between these four options. The length of a year is determined by the time it takes for a planet to complete one orbit around the Sun. Therefore, the length of a year varies depending on the planet’s … Read more
A. enzime B. Food C. hcl D. None of These The stomach stores food temporarily while it undergoes further digestion processes, including the secretion of enzymes and hydrochloric acid (HCl) to break down the food. So, while the stomach does produce enzymes (not “enzime”) and HCl, its primary function is to temporarily store food. Therefore, … Read more
A. Earth B. Mercury C. Sun D. Venus
A. Cromosphere B. Leutosphere C. Thermosphere D. Photosphere The part of the Sun commonly called its surface is the photosphere. The word photosphere means “light sphere” – which is apt because this is the layer that emits the most visible light. It’s what we see from Earth with our eyes.
A. the photosphere, the leutosphere , and the corona B. the photosphere, the chromosphere, and the scislophere C. the photosphere, the chromosphere, and the corona D. None of the above The sun’s atmosphere: Photosphere, chromosphere and corona.