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murzikaleks [220]
4 years ago
7

PLEASE HELP !! DESPERATE

Biology
2 answers:
jeka944 years ago
3 0
A is the right answer I think
alukav5142 [94]4 years ago
3 0

Answer:

It is still a subject of discussion whether early attempts at ... The first experiments with plant breeding were most likely limited to ... All three chemical mutagens are, as can be expected, strongly ... As in conventional mutagenesis, TILLING seeds are exposed to a strong ..... Genetic effects of X-Rays in Maize.

Explanation:

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Which hormone causes FSH and LH to be released?
vodomira [7]

Answer:

GnRH

Explanation:

GnRH stimulates pituitary secretion of luteinizing hormone (LH) and follicle stimulating hormone (FSH). LH and FSH then stimulate the ovaries, resulting in the growth of secondary preantral follicles and ovulation.

Although some release hormones are also secreted in pulses, GnRH is unique because pulsed gonadotroph stimulation is necessary for normal LH and FSH synthesis and secretion, while continuous infusion of GnRH - or the use of such an agonist hormone that stimulates continuous infusion - results in negative modulation of gonadotropic responsiveness to GnRH. This property is clinically used to treat hormone-responsive conditions such as endometriosis and precocious puberty.

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3 years ago
How does the need for resources affect the relationships organisms in an ecosystem?
Anarel [89]

Answer:

The need for resources will make the organisms competitive in their ecosystems.

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4 years ago
Many gasses are emitted into the atmosphere as a result of human activities. list two gasses other than carbon dioxide that rele
taurus [48]
Nitrogen and chloro-fluorocarbons
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The principle of the following can a change be directly observed?
liberstina [14]
Im pretty sure your answer is b.
5 0
3 years ago
What type of reproduction do ferns use
Elena-2011 [213]

They both use a reproductive strategy called alternation of generations, where there are two different reproducing morphologies: a diploid sporophyte, and a haplod gametophyte. The sporophyte produces spores by meiosis (2N -> N), which disperse and form the gametophyte, which produces gametes by mitosis (N ->N). Two of those gametes fuse to create a diplod zygote (N + N -> 2N), which becomes the new sporophyte

There are differences between the two types of plants, especially the relative size of the sporophytes and gametophytes, but they both use this kind of reproductive strategy.

4 0
3 years ago
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