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Inga [223]
3 years ago
15

Disadvantage of external fertilization?

Biology
1 answer:
lisov135 [29]3 years ago
8 0
It requires water to breed since the sperms requires water to swim
there might be zero chances of the sperm coming in contact with the eggs
a larger percentage of gametes unfertilised and are wasted
 there are a lot of environmental hazards
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Select a location within each of the following biomes and fill in the missing information on the table.
Lady_Fox [76]

Answer:

tundra is 1,700,

Explanation:

The biodiversity of the tundras is low: 1,700 species of flora and only 48 land mammals can be found, although thousands of insects and birds migrate there each year for the marshes. There are few species with large populations.

5 0
3 years ago
which process occurred frequently in the early history of the three domains on earth, and makes determining phylogenetic relatio
Degger [83]
The answer is horizontal gene transfer. 

Horizontal gene transfer enables gene flow between genomes of two organisms. It is a common process between different species of <span>prokaryotes and even, between  prokaryotes and eukaryotes. </span>When trying to reconstruct evolution and phylogenetic relationship, scientists face some difficulties because they cannot say the common gene transfer with the horizontal one.
4 0
4 years ago
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Explanation:

3 0
4 years ago
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Which part of the cell can be used to determine the cell is eukaryotic and prokaryotic?​
evablogger [386]

The nucleus. If a cell has a nucleus it is eukaryotic if it doesn't, it is prokaryotic.

3 0
3 years ago
If the ventral root of a spinal nerve were cut, what would be the result in the tissue or region that nerve supplies?
Ivan

Answer:

a. a complete loss of voluntary movement

Explanation:

Spinal nerves serve as the paths of communication between the spinal cord and specific regions of the body. Roots refer to the bundles of axons that serve to connect each spinal nerve to a segment of the spinal cord via smaller bundles of axons called rootlets. The ventral root also called the anterior root and the associated rootlets contain axons of motor neurons.

These motor neurons of ventral root conduct nerve impulses from the CNS to effector organs. Muscles and glands are the effector organs. As these effector organs receive motor information, voluntary movements are generated. If the ventral root of the spinal nerve were cut, the effector organs will not get the motor information and no voluntary movements will be generated.

8 0
3 years ago
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