BIOLOGY MIDDLE SCHOOL

What is the main cause of seasonal changes on earth? A.
the rate of earth’s rotation


B.


the speed of the moon’s revolution around earth


C.


the distance between the earth and sun


D.


earth’s axial tilt and distribution of sunlight on the earth’s surface

Answers

Answer 1
Answer: D because at some points the sun is closer making it hot...Then it is further away making it colder.
Answer 2
Answer: It's D--earth's axial tilt, and distribution of sunlight on the earth's surface.

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Which amino acid chain will be formed by the codons shown below GGU AGC CGG

Answers

The answer is Gly-Ser-Arg

Answer:

Gly-Ser-Arg

Explanation:

Membrane-bound organelles are not found in the cells of? A) bacteria. B) fungi. C) plants. D) protists.

Answers

A) bacteria. Membrane-bound organelles are found in eukaryotic cells. However, bacteria are prokaryotic, meaning that they do not have membrane bound organelles.
A) Bacteria

Prokaryota has no membrane bound organelles and bacteria is prokaryotic

Which of the following contains the greatest number of unipotent stem cells? A. 6-week-old embryo B. Blastocyst C. Adult D. 3-day-old embryo

Answers

The correct answer is option C

Unipotent stem cells are those stem cells that can form cells of one lineage only. An adult would be having the maximum number of unipotent stem cell as it has gone through the process of cell differentiation and the cell have been differentiated into different kinds of cells. For example: skin stem cells

The stem cells of embryo are mainly pleuripotent and multipotent that can form cells of different lineages.
An adult, since they are fully grown, they possess the most unipotent cells.

1. Which one lived in Antarctica earlier, the labyrinthodont, the lystrosaurus, or the duck-billed dinosaur? Explain.

Answers

lystrosaurus is the answer i believe

Many animals live in the polar ice ecosystem.what makes that possible?

Answers

There body is made for the certain temperature and there fur is a certain thickness which gives them a certain amount of warmth :D
Their bodies are made for that temp and climate and landscape

Consider the phylogenetic tree of Old World primates.According to the tree, which primates share the most recent common ancestor with humans?
gorillas
chimpanzees
bonobos and chimpanzees
bonobos and gorillas

Answers

According to the tree, bonobos and chimpanzees share the most recent common ancestor with humans.

What is a phylogenetic tree?

A phylogenetic tree is a diagram used to represent evolutionary relationships between different genetic lineages.

  • The phylogenetic tree indicates the ancestry between different taxonomic groups by the relative position among nodes.

In conclusion, according to the tree, bonobos and chimpanzees share the most recent common ancestor with humans.

Learn more about phylogenetic trees here:

brainly.com/question/2189834

#SPJ5

Answer:

bonobos and chimpanzees

Explanation:

I took the test on edg 2020
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