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kumpel [21]
3 years ago
5

3. What is the first thing the chromosomes do?

Biology
1 answer:
SVETLANKA909090 [29]3 years ago
7 0

Answer:

The first phase of Meiosis 1 is prophase 1. during the prophase 1 is where DNA is exchanged between homologous Chromosomes in a process called crossing over or recombination.

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Which flower part is formed from fused carpels
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That'd be the sepal, which is actually protected by the pedals, therefore, the answer is sepal. I hope this helps!
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Which physical evidence supports the evolution of earth due chemical weathering?
puteri [66]

<u>Answer</u>:

Concave shape of the wave rock  is a physical evidence that  supports the evolution of earth due chemical weathering

<u>Explanation</u>:

It is the best physical evidence of collection in the earth’s evolution. The earth surface is 2.7 billion years old, also the basis for formation of Australian continent formation. The wave rock is formed by weathering of the surrounding area, which helps in proving the deposition part, as the wave rock was below the ground, occurred due to deposition of rock years over years. It is made from very tough material from its surrounding. The weathering reduced the surrounding terrain, while the bedrock remained to witness for the history.  

8 0
3 years ago
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Essay on atoms 70 words
Vinvika [58]

Answer:

The atom, the basic building block of matter, consists of a core nucleus surrounded by negatively charged electrons. Inside the atom nucleus contains a mixture of positively charged protons, and electrically neutral neutrons. All atomic electrons bind to the nucleus through electromagnetic force. A ground of electrons bound together will form individual molecules. An atom with an equal number of protons and electrons will hold neutral. An ion has positive or negative charge, either through a lack of electrons or an electron excess. The number of protons determines the formation of chemical elements, while as the number of neutrons determines the element's isotope. Most of the atom's mass has a concentration compacted within its nucleus; however, protons and neutrons hold about the same mass. Electrons bound to atoms hold a percentage of stable energy levels, otherwise known as orbitals, which undergo transitory processes through absorbing or omitting photons with equal energy levels. Electrons determine an element's chemical properties, thus influencing an atom's magnetic properties.

Explanation:

6 0
3 years ago
. Students decide to remove the litter from an abandoned park and plant trees. Which of the following observations provides the
Margarita [4]

Answer:

C

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Precipitation is basically the weather, the people that come to the park would want a clean park which means that that would increase, and temperature is based on weather.

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3 years ago
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