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Contact [7]
3 years ago
11

Nelly was reading about ecological pesticides. She found a website that said that skeletons of some organisms settle as sediment

s in the ocean. They are then used as pesticides because they are abrasive against pests. Which organism is the article discussing?
Biology
1 answer:
aleksley [76]3 years ago
5 0

Answer:

Diatoms

Explanation:

Diatoms are a photosynthetic eukaryotic phytoplankton that virtually found in all waterways, fresh waters and  oceans, and also in most soils on earth. Diatoms play a very important role in the global carbon cycle. Diatoms are single-celled algae that has a characteristics cell wall that is made up of transparent opaline silicia that are elegantly sculpted.

When diatoms die, their shell or skeleton that is composed of silica, do not decay, but settle at the bottom of oceans as sediments to form what is often referred to as diatomaceous earth. It is this diatomaceous earth deposit that is then converted to diatomite powder, which is used as pesticides against insects such as ants, cockroaches, bedbugs and some other pests.

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Susan, a 67 year old female, is experiencing ataxia, or poor muscle coordination. when doctors perform a romberg test, the resul
Mice21 [21]

Correct Completed  Questions; Susan, a 67 year old female is experiencing ataxia, or poor muscle coordination. Doctors perform a neurological exam and they find that Susan is not positive for the Romberg test. Describe what these findings suggest about the sources of Susan's ataxia.

Answer:s

In order to test for balance and positioning(proprioception)   as a measure of  neurological function, or to test level   of intoxication alcohol  during driving, Romberg test is usually conducted,which can be negative or positive.It is generally used to investigate the cause of loss of motor control in individuals.

Explanation:

A positive result  showed that her  ataxia was due to loss of positioning due to loss of  sensory from sensory neurons.However if negative as in the case of Susan, then it  is to due to abnormality/dysfunctions   in the cerebellum, and not due to loss of sensory functions,

3 0
2 years ago
In guinea pigs the allele for black fur (B) is dominant over the allele for brown fur (b), and the allele for short fur (F) is d
galben [10]

Answer:

100%

Explanation:

This question involves two genes in guinea pigs; one coding for fur color and the other for fur length. The alleles of black fur (B) and short fur (F) is dominant over the alleles for brown fur (b) and long fur (f).

In a cross between two offsprings with genotypes: BBFF x bbff, the following gametes will be produced by each parent:

BBFF - BF, BF, BF, and BF

bbff - bf, bf, bf, bf

Using these gametes in a punnet square (see attached image), one will notice that all of the offsprings will have the genotype: BbFf i.e all or 100% of the offsprings are heterozygous for both of the genes or traits.

5 0
2 years ago
How do scientists use the differences in proteins compare Evolutionary Relationships between organisms?
sesenic [268]

Answer:

a

Explanation:

3 0
2 years ago
Which ones are correct?
Anna11 [10]
Anticline I believe would be the answer but in not the smartest so yeah
3 0
3 years ago
1. A cell that enters mitosis with 16 chromosomes will divide to produce___cells. Each cell will have____chromosomes.
a_sh-v [17]

Answer:

2 cells, 8 chromosomes

I don't know the answer for two I hope I helped tho

8 0
2 years ago
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