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Alexxandr [17]
3 years ago
13

A farmer cut a branch from his favorite Richard fruit tree planted in the soil and eager to be a nutrient the farmers method of

growing a new plant is a type of
Biology
1 answer:
Andrews [41]3 years ago
8 0

Answer:

idk I just need the points

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Mankind has used biotechnology in agriculture, food production, and medicine for thousands of years. As advances are made in bio
scoundrel [369]

Answer:

D dangerous organisms

Explanation:

i’m almost 100% positive if not then it’s probably A global warming

7 0
3 years ago
Where are some places where carbon is found?
s2008m [1.1K]

Answer:

rocks and sediments, while the rest is located in the ocean, atmosphere, and in living organisms.

Explanation:

carbo is found in these places for example:

6 0
2 years ago
Why is a person with type AB blood able to receive a blood transfusion from a donor with any of the major blood types (A, B, AB,
Alisiya [41]

Answer:

ABO blood grouping system is based on presence or absence of three types of antigen on red blood cells. A and B blood group have A and B antigens respectively. AB blood group has both A and B antigens. O blood group does not have any antigen.

A body with particular blood type will consider other blood group foreign ( because it has different antigen ) and produce antibodies against it. A person with blood type A can not be given B type blood because the antibodies in his body will destroy RBCs with B antigen which may even prove fatal.

AB blood type person can receive blood from both A and B blood groups because he has antigens for both of them so it will produce antibodies for neither of them. He can also receive O type blood because O blood does not have any antigen so it can be given to any person without incompatibility reaction.  

However, AB individual can only donate blood to AB individual because his blood cells have both A and B antigens. So, he can only donate blood to an individual who does not produce antibodies for both A and B blood groups and that would only be another AB blood type individual.

3 0
3 years ago
Birds and mammals have a four-chambered heart, but most reptiles have a three-chambered heart. How does this fact affect the con
eduard

Answer:

The animals present body structure is due to evolution. It is seen in each part including the structure of the heart. The vertebrate heart becomes complex from a simpler form.  

Invertebrates, the heart of fishes is two-chambered having one auricle and one ventricle. The deoxygenated blood gets purified in the gills. They are aquatic and no lungs for breathing. The hearts pump a mixture of oxygenated and deoxygenated blood to the body.  

The amphibians and reptiles have 3 chambered heart as they lead terrestrial mode of life. The gills modified into the lungs.  The left auricle receives pure blood and the right auricle receives deoxygenated blood. The blood purified in the lungs and in the ventricle, both types of blood get a mix. The ventricle pumps the mixed-blood throughout the body.

In the case of birds and mammal, the heart is 4 chambered and the oxygenated and deoxygenated blood are separated. These two are higher vertebrates. No mix of pure and impure blood, the body receives only the oxygenated blood.

This shows to construct the phylogenetic tree of vertebrates - the fishes should be in the bottom, and above it amphibians, reptiles, then, mammals and birds on the top branch of the tree. As the chambers and structure of the hearts modified one after another.

6 0
3 years ago
What is odontoid process in bones/
Rom4ik [11]

Answer:

<h3>The odontoid process</h3>

It exhibits a slight construction or neck, where it joins the main body of the vertebra...

<h3>Hope you like it please mark me as a brainliest </h3>
7 0
3 years ago
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