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vladimir1956 [14]
3 years ago
5

In an controlled experiment, why is it important to change just one variable at a time

Biology
1 answer:
77julia77 [94]3 years ago
7 0
If you change more than one variable at a time, then you will have a harder time trying to figure out why the certain change occurred.
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There is a protein synthesis cycle

Explanation:

The whole cycle goes through Transcription and Translation

where the DNA gets converted into RNA

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After the two avian kidneys do their work, a bird will excrete nitrogenous waste known as _____________ from the blood.
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The avian kidneys are divided into units called lobules and as the two avian kidneys of birds do their work or function, most of these birds excrete nitrogenous waste known as uric acid from the blood, which reduces water loss but requires more metabolic energy to produce nitrogenous waste.

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a marine biologist dredges up a small animal from the bottom of the ocean. it is uniformly segmented, with short, stiff appendag
Elden [556K]

Given the characteristics mentioned in the question, the animal must be an annelid.

<h3>What is an annelid?</h3>

Annelids, (Phylum name annelida) segmented worms, characterized by having body cavities (or body coelom), mobile bristles (or setae), and bodies segmented by transverse rings. The body cavity is reduced in leeches, and the bristles are devoid of some specialized morphology, including leeches. An important phylum of invertebrates in the animal kingdom, Annelida, consists of more than 9,000 species divided into three classes: Sea worms (polychaetes) are divided into motile and sedentary or tube-dwelling forms. earthworms (Oligochaeta); and leeches (Hildinea). Annelids are coelomic and tridermal.

General characteristics of annelids are:

  1. They show organization at the organ system level.
  2. Your body is segmented.
  3. They breathe through their body surfaces.
  4. The kidney is an excretory organ. They have well-developed circulatory and digestive systems.
  5. Common names for more familiar annelids include earthworms, sandworms, annelids, bristleworms, and leeches.

To know more about annelid, visit:

brainly.com/question/11400463

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4 0
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Covalent bonding is important to human beings because they are commonly found in carbon-based organic molecules which are considering proteins and DNA which are found in the human body.

There are three types of chemical bonds that are very important in the human body and physiology

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What best defines photosynthesis​
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