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pychu [463]
3 years ago
5

Direct observation is the simplest and most effective method to determine population size

Biology
2 answers:
Pavlova-9 [17]3 years ago
8 0
I think that this is a true statement: it's better than determining the population size by indirect means, for example by judging how much food they ate or by judging by just a sample of the population. I would maybe add that  this method can be supported by technology, for example taking a picture of the population and analyzing the picture later.
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strojnjashka [21]3 years ago
4 0

The correct answer is FALSE i just took the test!

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All members of a single species will have the same
asambeis [7]

Answer:

The answer should be 'Genes'

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2 years ago
Many chemotherapy drugs used to treat cancer work by modifying the mitotic spindle. Paclitaxel works by interfering with normal
Minchanka [31]

Answer:

by inhibiting the mitotic spindle plasticity

Explanation:

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5 0
3 years ago
_______ is located in the anterior neck produces key hormones for metabolism
Lapatulllka [165]

Answer:

THYROID GLAND

Explanation:

Thyroid gland functions in metabolisms by activities of thyroid cells.This cells  withdraws  Iodine from metabolites and combine it with amino acid tyrosine  for  productions of Thyroid hormones:

ThyroxineT3,(20%)

TriiodothyronineT4(80%). This production is under the influence of Thyroid stimulating hormones,regulated by the pituitary gland,

T3 and T4  increase calorinogenesis, (liberation of heat from digestion to supply energy,and oxygen consumption of the heart.)

Deficiency of thyroid hormones are goiters, hypothyroidism, and hyperthyroidism

6 0
3 years ago
Which condition is a benefical fir growth of cacao trees
olga55 [171]
Cocoa is the dried and fully fermented fatty seed of the cacao tree from which chocolate is made. "Cocoa" can often also refer to the drink commonly known as hot chocolate; cocoa powder, the dry powder made by grinding cocoa seeds and removing the cocoa butter from the dark, bitter cocoa solids; or it may refer to the combination of both cocoa powder and cocoa butter together

 

Beans inside the Pod Cocoa beans before roasting

Climate

Cocoa can be grown up to 300 m above mean sea level.  It requires a minimum of 90-100 mm rainfall per month with an annual rainfall of 1500-2000 mm.  The plants need equitable climate with well distributed rainfall.  If dry periods are prolonged, irrigation scheduling is necessary.  The temperature range of 15°-39°C with optimum of 25°C is considered ideal.

Soil

Cocoa requires deep and well drained soils.  Poorly drained soil affects growth of plants. Majority of area under Cocoa cultivation is on clay loam and sandy loam soil.  It grows well in the pH range of 6.5 to 7.0.

Shade requirement

Cocoa was evolved as an under-storey crop in the Amazonian forests. Thus commercial cultivation of cocoa can be taken up in plantations where 50 per cent of light is ideally available.  In India, coconut and arecanut gardens are suited best for cultivating Cocoa.  Under arecanut 30-50% of sunlight penetrates through their canopy which can be intercepted by cocoa.

Released varieties from CPCRI

Details of recently released varieties of cocoa

NC-45/53

 

Selection from Nigerian clone

Early, heavy bearer, self and cross compatible

Green (immature) to Yellow (ripe) color pods

Pods (no/tree/year) -75

Pod weight (g)- 321, Beans/ pod- 37, Single dry bean weight (g) - 1.05

Average dry bean yield (kg/tree/year) - 1.33

Potential yield (kg/tree/year) -    2.5

Yield kg/ha - 911

Fat content (%) - 52.5

Shelling percentage - 12

Recommended area - areca and coconut gardens of Karnataka, Kerala, Tamil Nadu

3 0
4 years ago
A reaction in which the entropy of the system increases can be spontaneous only if it is exothermic.
telo118 [61]
I believe that is correct, yes
8 0
3 years ago
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