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AleksandrR [38]
4 years ago
6

A large white and gray log that smells like pine is burned in a fire pit. After being completely burned, all that remains of the

log is a small pile of soft white-gray ashes that no longer smell of pine. Describe the evidence that a chemical change has occurred.
Biology
2 answers:
netineya [11]4 years ago
6 0

Answer:While the pile of ashes and log have similar colors, the change in size, odor, and hardness, and the difference in combustibility indicate that a chemical change has resulted in a substance with a different identity. Furthermore, the ashes cannot be converted back into a log.

Elis [28]4 years ago
4 0

A chemical change has occurred because the wood has turned into a substance that can't be changed back to it's original form. The wood has turned to ash, chemical changes are non reversible.

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Rare species of plants can be cloned so they don't go extinct. To do this, stem cells are taken from the __________ of the plant
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Answer:

Rare species of plants can be cloned so they don't go extinct. To do this, stem cells are taken from the <u>meristems</u> of the plant.

Explanation:

Stem cells can be described as cells which are undifferentiated and have a capability to divide into specialized cells. In plants, the stem cells are located in the meristems of the plant. Out of these cells, all the specialized tissues and organs form in a plant.

Cloning is a method to produce identical copies of a gene or an entire organisms. The method of cloning is now being used widely to make organisms that are at the verge of extinction.

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Which statement is TRUE of an archaeological survey?
Maslowich

Answer:

The correct option is A.

A. Small test pits can be conducted in an undisturbed part of the surveyed area to find buried artifacts that may not be readily seen on the surface.

Explanation:

This is because archeological survey refers to the study , exploration and digging of sites to obtain archeological remains. The basic sim of this is to get remains that are not visible to man underneath.

usually , the sites are dug out by a shovel so as to determine whether the soil contains any archeological emains that cannot be seen on the surface. This involves the action of excavating the out something or remains especially an archaeological site.

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3 years ago
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You did not put the answer options, but I can help you by stating that the scale of agriculture today is large-scale agriculture and it can be defined by a term that presents large farms with extremely high productivity.

Explanation:

The scales of agriculture are measured through the agricultural productivity achieved through work in the agricultural sector. Small-scale agriculture is one where productivity is low, the farmer does not produce as many products and most of them are harvested for family consumption, becoming a type of subsistence agriculture.

Large-scale farming is what we can see today, they are characterized by very large farms that promote high productivity, producing thousands of products in the shortest possible time.

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Green building is also known as green construction or sustainable building. It refers to the application of processes that take place throughout a building's life-cycle including planning, designing, construction, maintenance, renovation. All of these processes are environmentally responsible and resource-efficient. Green building ensures efficient use of land, energy, water, and materials.

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