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erica [24]
3 years ago
7

Insects are responsible for the destruction of a significant percentage of potential food harvests every year. Please select the

best answer from the choices provided T F
Biology
2 answers:
madreJ [45]3 years ago
6 0
The statement "insects are responsible for the destruction of a significant percentage of potential food harvests every year" is true.
kiruha [24]3 years ago
4 0

True

The crop productivity is basically affected by pests mainly weeds, pathogens and animals. According to a research by E.-C. OERKE, the potential loss to wheat and cotton crop was 50 % and 80 % respectively. 25-30 % of soya bean is lost every year due to pest attack. Out of all pests the most dangerous is the animal which as per an estimate has high potential of destroying the crops up to 34% while pathogens can destroy 16-18 % of crops.  

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Use the options below to complete each sentence.
Alex787 [66]

Answer:

no its predation, competition, cooperation

Explanation:

i just did it

8 0
3 years ago
Which of the following best describes an aspect of a membrane's molecular structure that causes it to be selectively permeable?
atroni [7]

Answer:

<u>d. Transport proteins within the membrane serve as a tunnel for molecules to enter the cell. </u>

<u />

Explanation:

Solutes are typically moved across the cell through either passive or active transport. The cells, surrounded by a bilipid layer or plasma membrane is amphiphlic- its polar, hydrophilic lipid heads face outwards, while their non-polar hydrophobic lipid tails face inwards towards each other.

While lipid-soluble molecules move across the layer easily, it is also difficult for charged and also large molecules to move across its surface, into the cell. Transmembrane channels, <u>embedded within the membrane</u>, help to maintain selective permeability as transport proteins, pores and gated channels. Simple diffusion happens as a method of passive transport in cells through plasma membranes.

The solutes travel through the plasma membrane in the process of diffusion from regions of high concentration to regions of low concentration; this occurs without the use of energy. <u>Molecules moving against their concentration require active transport mechanism to cross the membrane</u>.

3 0
3 years ago
Why do cells which lack cell cycle control exhibit karyotypes which look physically different than cells with normal cell cycle?
avanturin [10]
A karyotype is the number and appearance of chromosomes in the nucleus of an eukaryotic cell. Karyotypes also describe the chromosomes count of an organism  and the appearance of these chromosomes under the microscope. Cell which lack cell cycle control are often cancerous cells and they look different under the microscope compared to the normal cells. Cancerous cells will look different under the microscope in term of number of chromosomes, size, length, positioning and general appearance.
6 0
3 years ago
Jordan's grandmother uses the juice from squeezed lemons to remove stains from his shirt. He hypothesizes that the juice is the
ANEK [815]

Answer:

like david said just wash it lol

Explanation:

6 0
3 years ago
Haploid plant cultures are got from​
madam [21]

Answer:

The tomato is the edible berry of the plant Solanum lycopersicum, commonly known as a tomato plant. The species originated in western South America and Central America. The Nahuatl (the language used by the Aztecs) word tomatl gave rise to the Spanish word tomate, from which the English word

8 0
3 years ago
Read 2 more answers
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