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Zolol [24]
3 years ago
5

Which of these is a pure substance? a. diamond b. salt c. ocean water a only a, b, and c a and b b and c

Biology
1 answer:
Sloan [31]3 years ago
6 0

The answer is a. and b.

Diamond is pure carbon(C). Salt is pure sodium chloride (NaCl). Ocean water can contain a number of different elements mostly Water (H2O) and sodium (Na)

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Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is homozygous
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The cross between parent plants if one is heterozygous for yellow pods and the other is homzygous for green pods - Yy yy., i.e., option A.

<h3>What is heterozygous?</h3>

The occurrence of different types of alleles is referred to as heterozygous condition.

A heterozygous genotype may consist of one normal allele and one mutated allele, or two distinct mutated alleles.

The missing options of the question are:

  1. Yy ´ yy
  2. YY ´ yy
  3. Yy ´ Yy
  4. yy ´ yy

The cross between parent plants if one is heterozygous for yellow pods and the other is homzygous for green pods - Yy yy.

Thus, the correct option is A.

For more details regarding heterozygous genotype, visit:

brainly.com/question/238628

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2 years ago
HELP PLEASE! Why might a scientist repeat experiment if she did not make a mistake in the first one
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i believe its B but i might be mistaken.

Explanation:

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The junction where one neuron can transfer an impulse to another structure is called a(n)
garri49 [273]
Synapse.

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2 years ago
For which of the following problems would a crop rotation of various grains and legumes be an appropriate solution?
Maksim231197 [3]

Answer:

I and III only

Explanation:

Crop rotation is a farm practice that involves cultivating different species of crops on the same land at different seasons. In other words, the different crops are rotated. Crop rotation is done for various reasons including; improvement of soil fertility, pest and disease control etc.

In this case, a crop rotation of various grains and legumes would be an appropriate solution for the following problems:

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- A particular kind of pest is infesting the soil on a farm: Most pests are usually crop-specific, hence, planting only one type of crop can make that soil be infested with a particular kind of pest. However, rotating between crops such as grains and legumes can make a particular pests become scarce or less populated.

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3 years ago
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Are microorganisms best suited for dry, warm environments?
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The most significant effect of the microbes on earth is their ability to recycle the primary elements that make up all living systems, especially carbon, oxygen, and nitrogen (N). Primary production involves photosynthetic organisms which take up CO2 from the atmosphere and convert it to organic (cellular) material.

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