BIOLOGY MIDDLE SCHOOL

Which is NOT an example of a natural resource? A- Gold B- Oil C- Wood or D- Buildings

Answers

Answer 1
Answer:

Answer:

D. Buildings

Explanation:

Buildings are man made.
Answer 2
Answer:

Answer:D

Explanation: Man makes building you can't find it naturally because they're built.

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At birth the end of long bones are

Answers

cartilage  that the name 
In Children

A baby's bones begin to grow in the womb. At birth, the skeleton is partially formed. Many bones are still in "parts." The ends (epiphyses) and bony shafts (diaphyses) of long bones form separately in the womb. At birth, the ends of the long bones are mainly cartilage, with centers of bone beginning to form inside. As a child grows, the shafts get longer, and bone gradually replaces the cartilage epiphyses. Through the growing years, a layer of cartilage (the growth plate) separates each epiphyses from the bone shaft.

 Clavicle.  Image courtesy of: Smithsonian Institution

Between 17 and 25 years, normal growth stops. The development and union of separate bone parts is complete. At this point, you and your skeleton are as tall as you are going to get - with many fewer bone parts than you started with!

Facts:The clavicle (collar bone), pictured above, is the last bone to complete growth, at about age 25.Measuring the length of long bones can give an estimate of age for children, but this technique is useful only until bones have stopped growing.The tibia completes growth at about age 16 or 17 in girls, and 18 or 19 in boys.For toddlers to teenagers up to age 21, teeth are the most accurate age indicators. Learn more here!In Adults

Skeletons record an adult's age in several ways. The surfaces of the cranium, pubic bones, and rib ends hold clues. At the microscopic level, investigators can see the bone "remodeling" that takes place throughout life, as well as age-related bone breakdown.

Bone "Remodeling"Femur cross sections of adults ages 24 (left) and 77 (right). Images courtesy of: Smithsonian Institution

Even after childhood growth stops, bone "remodeling" continues. Throughout a lifetime, bone makes new osteons — minute tubes containing blood vessels. Microscopic exams show these changes, which can indicate adult age to within 5 to 10 years. Younger adults have fewer and larger osteons. Older adults have smaller osteons and more osteon fragments, as new ones form and disrupt older ones.

Clues in the CraniumCraniums of a 20 year-old (left) and a 70 year-old (right).  Images courtesy of: Smithsonian Institution

The bones that enclose the brain grow together during childhood along lines called cranial sutures. During adulthood, bone "remodeling" may gradually erase these lines, at variable rates. Closure of cranial sutures gives general information about a person's age. It is best used with additional indicators to estimate age, or when other age indicators are unavailable.

Other Age-Related ChangesArthritis on the spine as evidenced by "lipping" of the vertebrae.  Image courtesy of: Smithsonian Institution

Wear and tear on a body throughout a lifetime affects the skeleton. Arthritis of the spine and joints can reflect increasing age. Scientists also recognize many other clues to aging, such as the appearance of the rib ends and the cartilage that joins them to the sternum. In a young adult, the rib end walls are thick and smooth, with a scalloped or rounded edge. In an older adult, the walls are thin, with sharp edges, and the rim often has bony, irregular projections.

 

 

Of the three body regions of a grasshopper which one is specialized for movement

Answers

The thorax, it has the wings and legs attached to it.

I need 10 facts about Hurricanes for Science

Answers

Hurricanes are large, spiraling tropical storms that can pack wind speeds of over 160 mph and unleash more than 2.4 trillion gallons of rain a day.The deadliest U.S. hurricane on record was a Category 4 storm that hit the island city of Galveston Texas. When they come onto land, the heavy rain, strong winds and heavy waves can damage buildings, trees and cars. The heavy waves are called a storm surge.The difference between a tropical storm and a hurricane is wind speed – tropical storms usually bring winds of 36 to 47 mph, whereas hurricane wind speeds are at least 74 mph.Hurricanes rotate in a counter-clockwise direction around the eye. The rotating storm clouds create the "eye wall," which is the most destructive part of the storm.Hurricanes are classified into 5 categories, based on their wind speeds and potential to cause damage. Names can be "retired" if a hurricane has been really big and destructive. Retired names include Katrina, Andrew, Mitch and most recently Sandy.When the National Hurricane Center began giving official names to storms in 1953, they were all female. This practice of using only women’s names ended in 1978.The costliest hurricane to make landfall was Hurricane Katrina, a Category 5 storm that slammed Louisiana in August of 2005. Damages cost an estimated $108 billion.

Does Bread have cell organization

Answers

yes, because yeast was acquired to make it and yeast is a bacterial cellthat expands it

Are lysosomes in plant and animal cells

Answers

Answer:

Yes.

Explanation:
Yes lysosomes are in plant and animal cells

A ----- is a simplified representation of a real object or system.

Answers

Answer:

Model

Explanation:

  • A representation of a real object or system in its physics, conceptual or structural form is called the model of that object or system.
  • A model only represents an object or system but is not the object/system itself.
  • An example of the model of a system can be a model representing the water cycle which symbolically explains the systemic process and an example of a model of an object can be a globe which is a representative of the earth.
  • The model tries to simplify our understanding of the given object/system and hence there is a little deviation from the real object/system.
  • The purpose of the model is usually to provide basic knowledge regarding that particular object/system by giving a simpler representation.
Models are simplified representations of a real object or system.
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