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geniusboy [140]
3 years ago
10

When burned which substance forms a white powder to help visualize a tool mark?

Biology
1 answer:
Stels [109]3 years ago
3 0

<span>When magnesium ribbon is burned, this produces a white powdery film of magnesium oxide that help visualize a tool mark, which is usually a dark colored tool. They are used to highlight details during photography especially in forensic investigation. In addition, magnesium oxide may be smoked on the surface of an opaque material to form an integrating sphere and its reference white color is essential in colorimetry, due to its good diffusing and reflectivity properties.</span>

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Which human activity would help reduce the amount of carbon dioxide in the atmosphere
Alex Ar [27]

Answer:

Burning coal  

Explanation:

The emissions of carbon dioxide would reduce because then they will consume less gasoline. Instead of coal burning, this would reduce the overall concentrations of greenhouse gas emissions and generate energy from wind.

4 0
3 years ago
He kidney's ability to concentrate urine depends on the maintenance of an osmolarity gradient between the interstitial fluid of
jekas [21]

The ability of the kidneys to concentrate urine is dependent on the maintenance of an osmolarity gradient between the interstitial fluid of the cortex and the medulla. Renal concentrating ability can be measured in the laboratory by assessing the specific gravity of the urine produced.

3 0
3 years ago
During gylcosis what is the source of the chemical energy that is captured in ATP
Vesna [10]

Explanation:

The breakdown of glucose.

During glycolysis, enzymes act on the substrate, glucose. The covalent bonds of the macromolecule contain energy that is released and stored within ATP.

Glycolysis occurs in the cytoplasm; here, 2 molecules of ATP are used to cleave glucose into 2 pyruvates, 4 ATP and 2 electron carrying NADH molecules.

Further Explanation:

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’ or Citric acid cycle via the oxidization of pyruvate( through the process of glycolysis in the cytoplasm).

overall: C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≈38 ATP

Learn more about cellular life at brainly.com/question/11259903

Learn more about cellular respiration at brainly.com/question/11203046

#LearnWithBrainly

6 0
3 years ago
True or false?? the extinction of a species affects other species, including humans. explain your answer..
Sonbull [250]
I'm thinking true heres why lets say you have a bird and the bird eats worms.. and all the worms in the world are gone the bird will die and what ever animal ate that bird will die and what ever animal ate that bird will die and so on 

my guess
4 0
4 years ago
Read 2 more answers
I. Define the following terms:
Sunny_sXe [5.5K]

Answer:

<u>I. Define the following terms:-</u>

Population ➝ the world population is the total number of humans currently living.

Population density ➝ is a measurement of population per unit area or volume. It is frequently applied to living organisms, most of the time to humans.

Carrying capacity➝ is the average population density or population size of a species in a habitat.

Exponential growth➝ is a process that increases quantity over time. It occurs when the instantaneous rate of change.

Density-independent limiting factor➝ is any force that affects the size of a population of living things.

Logistic Growth ➝ is a population's per capita growth rate stays the same regardless of population size, making the population grow faster as it gets larger.

Density-dependent limiting factor➝ is a limiting factor of a population wherein large, large dense populations are more affected than small, less crowded ones ex. predation, competition, food supply.

<u>II. Enumarate at least three(3) factors that affect population growth.</u>

  • Birth rates
  • Death rates
  • Immigration

<u>III. Differentiate exponential growth and logistic growth.</u>

Exponential growth is a growth in population wherein the number of individuals increases. Logistic growth entails exponential growth in population along with a growth rate that is in a constant state. As the population comes to its carrying capacity, the growth rate then decreases significantly.

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hope it helps...

have a great day!!

3 0
3 years ago
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