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Jobisdone [24]
3 years ago
13

As you carry out the steps below, record notes in

Biology
1 answer:
kkurt [141]3 years ago
5 0

Answer:

Socratic app

Explanation:

it will help you

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Question 18
11Alexandr11 [23.1K]

Answer:

b and c

Explanation:

otherwise you couldn't scratch your back with one hand or do certain yoga positions

3 0
3 years ago
Read 2 more answers
Interference competition<br> Define
Monica [59]

Answer:

the competition between organisms is direct.

Explanation:

An example is the aggression display between competing organisms. This applies to both intraspecific and interspecific competition. In intraspecific competition, the competing organisms are of the same species.

6 0
3 years ago
Which factor causes the shapes of saturated and unsaturated fatty acids to differ?
lidiya [134]

The answer is option C. Number of double covalent bonds between carbon atoms is responsible for causing different shapes of saturated and unsaturated fatty acids. The double covalent bond causes kink in the unsaturated fatty acids because of which their stacking is disrupted and they become loosely packed. The problem with double covalent bond is that unlike single covalent bond it can't rotate and has almost cis-configuration. This is also the reason behind their liquidity at room temperature.

8 0
3 years ago
For fertilization to occur in humans, only one sperm is needed to weaken the barrier that surrounds the egg.
photoshop1234 [79]

Answer:

False

Explanation:

Approximately 200 out of 200 million sperms ejaculated during intercourse reach the general vicinity of the egg.  They sperms must undergo capacitation during which dilute inhibitory factors fluids of the female reproductive tract weaken the membrane of the sperm head so that head of the sperm can be broken easily when it came in contact with the egg.

The first sperm to reach an egg isn’t the one to fertilize it because the egg is surrounded by a gelatinous membrane called the zona pellucida. Outside this layer, a layer of small granulosa cells also present.

Therefore, it requires numerous sperm to clear a path through these barriers before one of them can penetrate the egg and fertilize it.

8 0
4 years ago
Bioaccumulation of this chemical lead to bird eggs with weak shells and nonviable offspring:
Olin [163]
Bio accumulation of DDT lead to bird eggs with weak shells and non viable offspring. The lethal effects of DDT on birds was first noted in 1950; scientists discovered that earthworm was accumulating the DDT pesticide and that the robins that were preying on the earthworms were been poisoned. Further research revealed that the chemical cause thinning of the egg shell and production of non viable offspring. The chemical has since been banned in USA.
7 0
4 years ago
Read 2 more answers
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