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Sergeu [11.5K]
3 years ago
14

How can you indentify the difference between a chemical and physical change and what are signs that a chemical change has occurr

ed
Biology
2 answers:
Scorpion4ik [409]3 years ago
8 0

Answer:

chemical change changes the identity of a substance, while a physical change can just be observed. Some signs that a chemical change has occurred are, <u><em>temperature change, forming bubbles, color change, new substance forming,</em></u> there are more, but those are just some of which i now

Explanation:

hope this helped!!!<3

photoshop1234 [79]3 years ago
4 0

Answer:

Explanation:

The formation of a gas is a clue to chemical changes. The bubbles of gas that you observed form when an antacid is dropped into water is an example of change. ... After ice melts into liquid water, you can refreeze it into solid ice if the temperature drops. Freezing and melting are physical changes.

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Organize the parts of this body system in the CORRECT order according to the levels of organization in a multicellular organism,
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Recall what you know about nervous tissue to answer the following questions. Nervous tissue can generate and conduct ____ signal
Dimas [21]

Answer:

Nervous tissue can generate and conduct <u>electrical</u> signals that control the body.

Explanation:

The neuron is the specialized cell that provides function to nerve tissue. Given the structure of the neuron, this cell is capable of creating and conducting information in the form of electrical impulses or signals, by depolarizing its cell membrane and generating action potentials.

The information generated and transmitted by the neurons allows the nervous system to obtain internal and external information of the organism, as well as to control all the body functions.

<em>     The other options are not true because nerve tissue does not generate or conduct </em><em>thermal </em><em>or</em><em> chemical </em><em>signals to perform its function.</em>

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In water, red light is fully absorbed at about 15 m, orange light is fully absorbed at about 30 m, yellow light is fully absorbe
zhuklara [117]

Answer:

The photosynthetic organisms of the water can survive at a depth of 100 meters due to the presence of blue light.

Explanation:

There are two colors which are responsible for the process of photosynthesis. These two colors are red and blue. Red and blue light of solar radiation is absorbed and green light is reflected back by the green pigment called chlorophyll. So in the depth of 100 meters in the water, blue light is present so plants can make their own food during photosynthesis.

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3 years ago
Two main ingredients in plant fertilizer are phosphorus and nitrogen. these elements are found in which classes of biomolecues?
masya89 [10]

<u>Nucleic Acid, and Protein</u> are the class of biomolecule which are the two main ingredients in plant fertilizer.

Biomolecules- A chemical substance that is present in living things is called a biomolecule. These consist mostly of substances with the chemical elements carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus. The building blocks of life, biomolecules serve crucial roles in all living things.

Fertilizer- Any product or material given to soil to encourage plant development is referred to as fertilizer. There are many different types of fertilizers, and the majority of them include potassium, phosphorus, and nitrogen (N) (K). In actuality, the package of fertilizers bought in supermarkets lists the N-P-K ratio.

To know more about the Biomolecule, click on the below link,

brainly.com/question/5560087

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6 0
2 years ago
PLSSSS HELP IF YOU TURLY KNOW THISS
s2008m [1.1K]

All parts of nonvascular plants must be near water because they have: B. tiny roots.

<h3>What is photosynthesis?</h3>

Photosynthesis can be defined as a biological and chemical process through which living organisms such as green plants (autotrophs), transform light energy (sunlight) into stored chemical energy.

<h3>What is a nonvascular plant?</h3>

A nonvascular plant can be defined as a species of low-growing, non-flowering plant that lacks specialized conducting channels, deep roots or vascular tissues (xylem and phloem) for the transportation of nutrients and absorption of water.

Generally, nonvascular plants usually possess tiny roots and the the dominant stage of their life cycle is the photosynthetic gametophyte. Some examples of a nonvascular plant include the following:

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In conclusion, we can infer and logically deduce that all parts of nonvascular plants must be near water because they have tiny roots.

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Complete Question:

All parts of nonvascular plants must be near water because they have____

A) deep roots

B) tiny roots

C) large branches

D) Big leaves

8 0
1 year ago
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