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ira [324]
3 years ago
11

22. Explain how emission or absorption spectrum can be used to identify the composition of objects in space

Biology
1 answer:
densk [106]3 years ago
4 0

Answer:

Identifying elements in astronomical objects using their spectra. Measuring the spectrum of light from a star can tell astronomers what the star is made up of. Since each element emits or absorbs light only at a particular wavelength astronomers can identify what element are in the stars from the lines in their spectra.

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Which kind of carbon dating can be used to determine the exact age of the rock and which kind of carbon dating is used to compar
KATRIN_1 [288]

They use absolute dating methods, sometimes called numerical dating, to give rocks an actual date, or date range, ... However, there are radiometric dating methods that can be used on sedimentary rock, including luminescence dating

i hope this help

sorry if it wrong

7 0
3 years ago
Drag each of the labels into the appropriate position to indicate which blood type is being described.
Zielflug [23.3K]

Answer:

Type O

Expresses the B agglutinin

Expresses all the major antibodies

The most common US blood type

The universal donor

Type AB+

Expresses all of the major antigens

Expresses the D antigen

The least common US blood type

The universal acceptor

Expresses the Rh factor

Expresses A agglutinogen

Explanation:

Blood type is a grouping of blood into classes that have the presence or absence of antibodies and or antigens on the red blood cell surfaces

The class of blood determines whether the antigens are glycolipids, carbohydrates, proteins or glycoproteins of Type O

The blood type of a person is an inherited trait from both parental gene. There are various blood grouping system with the ABO and Rh systems being the most important as they determine the suitability of a given blood for transfusion.

4 0
3 years ago
Consider this scenario between Josh and Julie Josh met Julie in line at a taco truck near campus and noticed she ordered extra h
Artyom0805 [142]

Answer:

The right matching of the scenario in the question are as follows:

1. OBSERVATION: Josh noticed that Julie ordered extra hot peppers and added hot sauce to her food  

2. QUESTION: Josh wondered how to cook spicy Mexican food.

3.  HYPOTHESIS: Josh decided jalapenos would be a good ingredient to add spice to the recipe.

4.  EXPERIMENT: After chopping the jalapenos, he slowly added some to the enchilada filling, tasting as he went until he thought it was spicy enough.  

5. RESULTS: Julie thought the enchiladas were delicious and exactly the right level of spice.  

6. CONCLUSION: Josh determined that since Julie liked the meal, adding jalapenos to the recipe was a good way to make it spicy.

Explanation:

Scientific method is an organized steps of procedures that scientists used to study and gather knowledge about different phenomenons. The systematic steps of scientific method start with observation, the observed phenomenon usually make a scientist to ask questions that he doesn't have an answer to. This will prompt him to formulate an hypothesis and set up an experiment to see if his hypothesis is true or not. The result he obtains from the experiment will determine the type of conclusion he will make about his earlier observation. By following these steps, scientists usually obtain useful  information that bring progress and advancement to humanity.  

5 0
3 years ago
1. What type of succession takes place that increases the biological diversity of an ecosystem? For example, if we started with
professor190 [17]

There are two types of succession that lead to the increasment of the ecosystem:

1. Primary succession is the change in the structure of an ecosystem represented with the increase of the ecological community on an area that has not been previously occupied by an ecological community such as area after the lava flow or glacial lake. The first organisms of primary succession are pioneer plants usually, lichens and mosses.

2. Secondary succession includes the step of removal of pre-existing community and after that, colonization of the new one.  


6 0
3 years ago
If titanium has 22 protons in its nucleus how many neutrons are present in the nucleus of its most common isotope
marin [14]

there should be 26 hope this helps

8 0
3 years ago
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