The lunar phases are produced as a result of the change of the relative positions of the Earth, the Moon and the Sun.
The part of the lunar surface illuminated by the Sun that we can see from the Earth, is changing throughout a cycle that is repeated periodically every 29 days, 12 hours, 43 minutes and 12 seconds.
The answer is: B) Earth that revolving around the sun and the sun's light being reflected off the moon.
The phases of the moon are caused by the moon revolving around the sun and Earth.
The correct option is A.
The Moon region's shape directly lighted by the sun, which may be quantified using areas or angles, is known as the lunar phase or Moon phase.
The first quarter, full moon, last quarter, and new moon are the main phases. The secondary phases are the waxing crescent, the waxing gibbous, the declining crescent, and the waning gibbous. Waxing describes the moon's image as expanding, while declining describes its image as contracting.
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b. A population consists of a community of organisms and its physical environment, and a community is made up of many different ecosystems.
c. An ecosystem consists of a community of organisms and its physical environment, and a community is made up of many different populations of organisms.
d. An ecosystem consists of a population of organisms and its physical environment, and a community.
Reason that is associated with why it is possible for atoms of metallic elements to form ionic bond, even though they are not consider as a good former of covalent bonds is : Because They loose their electron readily and no attraction for electron addition.
Therefore, they can only form few covalent bonds.
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b. are typified by tweezers or forceps
c. have load at one end of the lever, fulcrum at the other, and effort applied somewhere in the middle
d. in the body can operate at a mechanical advantage or mechanical disadvantage, depending on specific location
Answer: d. in the body can operate at a mechanical advantage or mechanical disadvantage, depending on specific location.
Explanation:
A first-class lever is defined as the force in which fulcrum is present in the center and the load and effort on each side of the fulcrum. First class lever moves over a large distance to move the load to a smaller distance.
First-class lever can be operated at mechanical advantage or disadvantage that it can aid in work by changing the direction of the force and by increasing the efficiency. As the the fulcrum is between the load and the effort so the length of the effort arm divided by the length of the effort arm.
If the fulcrum is closer to the effort, it will operated at mechanical disadvantage and vice versa.
Example of first class levers includes scissors, a claw hammer, a see-saw and a weighing balance.
Hence, the correct option is D.
B. lava
C. metamorphic
D. igneous
Answer:
( A). sedimentary is a correct answer.
Explanation:
Fossils are the impression or remains of plant and animal present on the layer of sedimentary rocks.
Fossils are usually found in sedimentary rocks, as these rocks are formed on the Earth's surface at low pressure and temperature.
The sedimentary rock contains fossil, as they are formed at low temperature and pressure, due to this fossil remains, are not destroyed.
Thus this the reason Fossils are usually found in sedimentary rock.
Fossils are usually found in sedimetary rock. The correct option is A.
Thus, Sedimentary rocks are typically where fossils are found. Sediments, which may contain animal and plant remains, build up and cement together to produce sedimentary rocks.
These sediments may get lithified over time and solidify into sedimentary rock.
Because the layers of sediment can shield and preserve the remnants of ancient species, fossils are frequently preserved in sedimentary rock, offering important insights into Earth's past and the evolution of life on our planet.
Thus, Fossils are usually found in sedimetary rock. The correct option is A.
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The correct option is A. DNA replication is the process by which two identical copies of DNA are produce from one original, parent DNA. The process occurs in all living organisms and it is the mean through which traits are passed from parents to offspring. A number of mechanisms has been put in place to ensure that base pairs are accurately copied during the process of DNA replication. For instance, pairing adenosine base with guanosine during the replication process will result in an error, which can have very severe consequences, if it is not corrected.