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nexus9112 [7]
3 years ago
15

Soil aeration is caused by ____.

Biology
2 answers:
ratelena [41]3 years ago
7 0

Answer: earthworms

Soil aeration is a phenomena that is related to the pores present in the soil, these pores allows the exchange of gases by the roots. Roots acquire oxygen from the soil pores from the atmosphere and released out carbon dioxide from the roots leaves the soil from these pores. The earthworms and other insects plays an important role in increasing the soil aeration as these worms are decomposers which feed upon the dead organic matter present in the soil these worms creates bores inside the soil in search of food. The bores helps in exchange of gases within the soil and the external environment.  

stellarik [79]3 years ago
6 0
Worms wold be the best n
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Glia that provide myelin for neurons in the brain are called ________.
kati45 [8]

Answer:

oligodendrocytes

Explanation:

Glial cells are part of the nervous system. These are helper cells that support the function of the central nervous system (CNS) and can be called oligodendrocytes when they supply myelin to neurons.  These cells are responsible for producing the myelin sheath have the function of electrical insulator for CNS neurons. They have extensions that wrap around the axons, producing the myelin sheath.

It is estimated that there are 10 glia cells in the CNS for each neuron, but because of their small size, they occupy half the volume of nervous tissue. They differ in form and function and they are: oligodendrocytes, astrocytes, Schwann cells, ependymal cells, and microglia.

4 0
2 years ago
Both osmosis and diffusion require energy and are considered active transport.
My name is Ann [436]
First one is true so yes
3 0
2 years ago
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1.
SSSSS [86.1K]
1-The correct answers is C- evolutionary classification.
Evolutionary classification/taxonomy is a branch of biological classification. The objective is to classify organisms and group them based on their shared descent, progenitor-descendant relationship and degree of evolutionary change. Now this classification can be done by comparing DNA sequences of the organisms and seeing how many they have in common

2- The correct answer is A-cladistic analysis.
A cladistic analysis is focused on categorizing the organisms based on their derived characters. And what is that? that means they are getting categorized
according to their evolutionary relationships( from ancestral characters).
So, species are going to be classified according to how recent their common ancestor is. If two species have a more recent ancestor they will end up in the same group
If the common ancestor between them is far, the distance between the respective taxa will be bigger.

3- The correct answers is C.
A derived character is a characteristic that appeared throughout evolution, still remains in a lot of different taxonomic groups and allows us to identify those groups.
From the options given, C is the only correct one because the presence of hair (a derived character)  only exists in mammals( the group). Other animals don't share that trait.


4-The answer is A.
In each node, a taxon was only one but then was divided into two taxa. Therefore, each node will represent a common ancestor of the taxon.
The correct option is A because the last node or terminal node is the hypothetical last common ancestor of the taxon on the cladogram.

5-  The correct answer is A.-DNA can solve evolutionary puzzles.
Dna has been helping understand how an organism is similar to more than one species, and that way, we can classify the organism the best way possible.
This can be achieved by comparing the nucleotides of the organism we want to classify, with other species. There are databases that have all the DNA sequenced so, what's left to do is count the common nucleotides and their positions.
3 0
2 years ago
Sedimentary rocks formed from broken fragments of other rocks are ____.
serious [3.7K]
I believe the correct answer is B. Detrital
5 0
3 years ago
Read 2 more answers
mRNA is a complementary copy of a Dna strand. Write in the complementary RNA bases for the DNA template strand below.
Komok [63]

Answer:

UUC AUA GCU CCA ACU GGA UAG

Explanation:

4 0
2 years ago
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