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myrzilka [38]
3 years ago
5

ANSWER PLS!! I WILL GIVE BRAINLIEST

Biology
1 answer:
dangina [55]3 years ago
3 0

The gas is oxygen. This oxygen resulted from photosynthesis because the algae was exposed to light.

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What is the relationship between the rate at which molten material cools and a minerals crystals
worty [1.4K]

The answer is; The slower the cooling the larger the crystals

Slow cooling allows the aqueous molecules of the compound to find a perfect geometry and grow into a large crystal. Fast cooling causes impurities to be incorporated into the growing lattice hence atagonizing the growing crystals.

3 0
3 years ago
Evolution can be guided by random processes. What is the effect called when some genotypes are lost in a small population over t
soldi70 [24.7K]

Answer:

Genetic drift

Explanation:

Genetic drift is defined as the random change in allelic frequencies from one generation to the other.

Genetic drift is an evolutionary mechanism in which the allelic frequencies in a population change through many generations. Its effects are harder in a small-sized population, meaning that this effect is inversely proportional to the population size. Genetic drift results in some alleles loss, even those that are beneficial for the population, and the fixation of some other alleles by an increase in their frequencies. The final consequence is to <u>randomly</u> fixate one of the alleles. Low-frequency alleles are the most likely to be lost. Genetic drift results in a loss of genetic variability within a population.  

Genetic drift has important effects on a population when this last one reduces its size dramatically because of a disaster -bottleneck effect- or because of a population split -founder effect-.

5 0
3 years ago
Which of these descriptions best defines a scientific law?
rosijanka [135]
<span> A scientific law always applies under the same conditions, and implies that there is a causal relationship involving its elements.</span>
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3 years ago
What are the roles of covalent bonds and hydrogen bonds in the structure of DNA?
Vinil7 [7]
For the answer to the question above,
 <span>DNA is made up of two nucleotide strands. The nucleotides are connected together by covalent bonds within each strand. The sugar of one nucleotide forms a covalent bond with the phosphate group of another. The two strands themselves are connected by hydrogen bonds. The hydrogen bonds are found between the bases of the two strands of nucleotides. Adenine forms hydrogen bonds with thymine whereas guanine forms hydrogen bonds with cytosine. This is called complementary base pairing</span>
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If a bowling ball hits a wall with a force of 6 N, the wall exerts a force of ____ back on the bowling ball. (1 point) 0 N 3 N 6
alexgriva [62]
The answer is 6 Newtons
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