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iragen [17]
3 years ago
15

A woman treated her home with a pesticide that kills spiders. The first application killed 78% of the spiders. Two months later

she applied the pesticide again, but it only killed 45% of the spiders. What would best explain the decrease in the effectiveness of the pesticide?
Biology
1 answer:
WARRIOR [948]3 years ago
7 0
Natural selection. Only spiders that were more resistant to the pesticide lived through the first spraying of the pesticide, thus we're the only ones that could reproduce. This in turn made the offspring of the previous generation more resistant as well; thus making the pesticide less effective.
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The ability of an organism to sense and react to changes in its body illustrates
Molodets [167]

Answer:

responsiveness

Explanation:

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Alcohol is considered a ________ because it tends to suppress central nervous system activity.
Oduvanchick [21]
As far as I remember, alcohol is considered as a depressant because it tends to suppress central nervous system activity. Depressant is a drug which reduces CNS activity because of ethanol.
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Aminoacyl-tRNA synthetases recognize their specific amino acid by _____ and recognize the tRNAs that carry it by the _____.
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Aminoacyl-tRNA synthetases recognize their specific amino acid by charge, size and R group and recognize the tRNAs that carry it by the nucleotide sequence .

Aminoacyl-tRNA synthetases are enzymes that attaches the appropriate amino acids on to its tRNA . These are also responsible for performing the first step of protein synthesis.

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Drag each label into the proper position to identify whether the indicated structure is located on the femur, humerus, or both.
Evgen [1.6K]

Femur: Greater trochanter-Gluteal tuberosity. Humerus: Coronoid fossa-Intertubercular sulcus-Trochlea-Lesser tubercle-Deltoid tuberosity-Olecranon fossa. Both, femur and humerus: Medial epicondyle-Capitulum-Intercondylar fossa-Lateral epicondyle-Head.  

Further Explanation:

Femurs:  

femurs or femora, or thigh bone, is the proximal bone of the hindlimb in tetrapod vertebrates. The head of thefemur explains with the hip bone socket in the pelvic bone framing the hip joint, while the distal piece of the femurarticulates with the tibia and kneecap shaping the knee joint.  

Humerus:  

The humerus is the long bone in the upper arm. It is situated between the elbow joint and the shoulder. At the elbow, it associates essentially to the ulna, as the lower arm's outspread bone interfaces with the wrist. At the shoulder, the humerus associates with the edge of the body by means of the glenoid fossa of the scapula.  

Femur or humerus:  

Humerus is situated in the upper arm, while femur is found in the upper leg. The length and the normal breadth of the femur are higher than that of humerus.Femur is the biggest bone in the body while humerus is the second biggest. Femur is more grounded than humerus.  

humerus and the femur comparative:

The humerus and the femur are relating bones of the arms and legs, separately. While their parts are comparable by and large, their structure has been adjusted to contrasting capacities. The leader of the humerus is practically hemispherical, while that of the femur shapes around 66% of a circle.

Subject: biology

Level: college

Keywords: femurs, humerus, femur or humers, humerus and the femur comparative.  

Related links:

Learn more about evolution on

brainly.com/question/3953793

brainly.com/question/1820994

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A band in the test line but not a band in the control line indicates an inconclusive pregnancy test.

<h3>What is Pregnancy test?</h3>

This test involves the measurement of Human chorionic gonadotropin in the body as it is synonymous with pregnancy.

A band in the test line but not a band in the control line indicates an inconclusive pregnancy test while a band in the control line but not a band in the test line indicates a negative test result.

Read more about Pregnancy test here brainly.com/question/1619156

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