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WARRIOR [948]
3 years ago
7

How does the gray whale fit into the food web?

Biology
1 answer:
devlian [24]3 years ago
5 0
They play a large role in the success of they’re feeding ground ecosystems
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Nearly all populations will tend to grow ____ as long as there are resources available.
Ghella [55]
Expodentially is the correct answer
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4 years ago
What do floodplains,sandbars and river deltas have in common?
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They have all been formed by sandblasting
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The most significant characteristic of sexual reproduction is:
sdas [7]

Answer:

Genetic variability. (Ans B)

Explanation:

Sexual reproduction is defined as the development of the new gamete, and it involves the characters of both parents, and showing the new characters from the fusion of male, and female gametes. Some characteristic of sexual reproduction are:

1) It is biparental in nature.

2) Gametes are always synthesized.

3) Fertilization occurs.

4) Meiosis and mitosis both involves.

5) New gamete genetically different from parents.

6) Multiplication is not so rapid.

3 0
3 years ago
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What causes the gases to move in the lungs during gas exchange?​
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Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
4 0
3 years ago
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Sixty flowering plants are planted in a flowerbed. forty of the plants are red-flowering homozygous dominant. twenty of the plan
myrzilka [38]

Answer:

The flowering population is in Hardy Weinberg equilibrium.

Step by Step Explanation:

Total initial population size = 60

As both the populations are homozygous so the frequency of alleles will be,

P = 80/120= 0.66

q = 40/120= 0.33

The predicted frequencies for genotypes once the population has reached Hardy-Weinberg

p2 = 0.4356

2pq= 0.4356

q2 = 0.1089

The number of plants with each type of flower in a papulation of 420 is,

Homozygous dominant= 185

heterozygous= 185

Homozygous recessive= 50

Chi square analysis:

The observed values for red-flowered plants, pink-flowered plants, and white-flowered plants are not significantly different from the expected values predicted by Hardy Weinberg equilibrium.

Phenotype      observed(o)    expected (e)          (o-e)2/e

Red                        178                 185                       0.26

Pink                       190                 185                       0.135

White                     52                   50                     0.08

                                       chi-square = 0.474

With 2 degree of freedom this chi-square gives a p value of 0.7 - 0.8, which is not significant.  

0 0
3 years ago
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