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Ludmilka [50]
2 years ago
10

The ________ is the idea or concept that ancient life forms succeeded each other in a definite, evolutionary pattern and that th

e contained assemblage of fossils can determine geologic ages of strata?
a. principle of superposition
b. law of horizontality
c. law of cross-cutting relationships
d. principle of faunal succession
Biology
1 answer:
exis [7]2 years ago
3 0

The answer is D.  In a geological era, when the plants and animals in the then environment die, they get buried in sediments. These sediments are covered by other sediments of another geological time within which are the remains of dead species of the then geological era. These sediments from different geological times have different properties hence form visible strata that can be studied to identify the kind of environment in the then geological time.   Their fossils can also be studied to identify the kind of species that roamed the earth during the time.






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Your answer should be: Lithium and Dopamine 
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2 years ago
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The diagram shows a seed pod from a sweet gum tree. The pod has a hard outer covering and sharp, hooked spurs.
pashok25 [27]

Answer:

The hook spurs allow it to be carried my fur because the hooked spurs can connect to the fur and be dropped at a new place, were a new generation of plants can grow! :D your welcome!

Explanation:

7 0
1 year ago
An experiment was performed to determine the mode of inheritance of two mouse genes, one for fur color and one for fur length. I
sammy [17]

Full question found from other source

The F2 generation phenotypes for each cross are shown in Table 1. (See attachment) Which of the following is the mean number per cross of F2 generation offspring that are the result of crossing over?

Answer:

B, 2.2

Explanation:

The parental genotypes are long and black vs short and white. Therefore the phenotypes that result from crossing over are long and white, and short and black. (middle two rows of the table).  If we add up the total number of offspring with these genotypes we get 6 long whites, and 5 short blacks.

The total is 11 from 5 crosses, so the mean is 11/5 = 2.2

7 0
2 years ago
Salvador would like to take a paternity test to determine if he is Pilar’s father. He asks Pilar’s mother, Antonia, to provide D
netineya [11]

Answer:

d. Autoradiographies

Explanation:

Based on the information provided within the question it can be said that the technique that is mainly used for this are Autoradiographies. This is a technique that is mostly used for X- ray film to visualize molecules or fragments of molecules that have been radioactively but are also used for  analyzing the length and number of DNA fragments using a special method called gel electrophoresis which is then used to compare the various DNA samples.

7 0
1 year ago
Which of the Caulerpa taxifolia’s traits make it so dangerous to local ecosystem
k0ka [10]

<u>Answer:</u>

<em>Caurepa taxifolia is an invasive species of algae and is listed in the IUCN list of 100 invasive species. </em>

<u>Explanation:</u>

In is an algae usually found in the pacific ocean. It was earlier used in aquariums as  an <em>ornamental species of algae</em>. The dangerously invasive nature overshadows its attractive appearance.

It is inedible and  increases in numbers at a surprisingly <em>accelerated rate.</em>  The growth of other plants is difficult in areas dominated by the Caurepa taxifolia. The introduction of this <em>algae was in the Meditteranian sea. </em>

8 0
2 years ago
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