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marshall27 [118]
3 years ago
10

A science class is checking to see how much life exists in local streams. The students each go to a stream and take a sample of

water. What step of the scientific process is this? O A. Collecting data B. Forming a hypothesis C. Drawing conclusions D. Peer reviewing​
Biology
2 answers:
WITCHER [35]3 years ago
8 0

Answer:

Collecting data because they are collecting specimens for counting

Explanation:

Ne4ueva [31]3 years ago
7 0

Answer:Collecting data

Explanation:

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The cycle repeats when the carbon stored in the atmosphere as carbon dioxide gas is taken in
sasho [114]

Answer:

Process of photosynthesis takes place.

Explanation:

When carbon dioxide comes inside the leaves from their stomata then water and carbon dioxide combine and form a six-carbon compound having six oxygen and twelve hydrogen compound as well. This process is called photosynthesis. The glucose formed in this process is used by plant and animal too. So this process is necessary for life on this earth.

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3 years ago
(03.05 hc) the base pairs in a dna strand are held together with hydrogen bonds. if the two nitrogenous bases in each pair were
asambeis [7]

The cell would have to take in and use more energy in order to break the covalent bonds.

The correct option is B

Hydrogen bonds :

are the chemical mechanism that governs the complementarity of the bases of DNA. This correspondence is unique thanks to the geometry of the hydrogen donor atoms and the acceptors that form the bases.

The (hydrophobic) bases are stacked inside the double helix of DNA; their plane is perpendicular to the axis of the double helix. The outside (phosphate and sugar) is hydrophilic.

The hydrogen bonds between the bases of one strand and the bases of the other strand keep the 2 strands united.

One purine on one strand necessarily binds to a pyrimidine on the other strand. As a corollary, the number of purine residues is equal to the number of pyrimidine residues.

* A binds to T (by 2 hydrogen bonds).

* G binds to C (via 3 hydrogen bonds: more stable bond: 5.5 kcal vs 3.5 kcal).

What part of the DNA strand do hydrogen bonds hold together?

hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.

Learn more about DNA strand:

brainly.com/question/26466656

#SPJ4

7 0
2 years ago
A student conducts an experiment to determine how the amount of water given to a plant affects it growth what is the dependent v
olchik [2.2K]

The dependent variable would be anything that is not consistent. So outside factors such as how much sun and the environment that the plant is contained in.

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When and where was the first fossil of Australopithecus discovered?
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Explanation: The first Australopithecus fossil was found in a lime quarry at Tuang, it was found by Raymond Dart in November 1924.

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3 years ago
Help!!!!!!!! Pls help!!!!!!!!!
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Genotype of the Q gene is homozygous dominant
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