Scientists were conducting a multiyear study on the effectiveness of a new drug for long-term memory loss. Theygave some of the test subjects the new drug to find out if it improves their long-term memory
Which is a possible limitation of this study?
O Test subjects may want to participate in additional experiments.
O Test subjects may find that the drug is not effective.
O Test subjects may get bored and want to quit early.
O Test subjects may have full-time jobs.

Answer: 61

Explanation:

The value 61 implies that 61% of the 617 nucleotide positions are the same in both species.

Final answer:

There is no specific comparison mentioned between Escherichia coli and Comamonastestosteroni in the given information.

Explanation:

In the given information, there are several mentions of Escherichia coli and Comamonas testosteroni. However, there is no specific comparison mentioned between the two. Therefore, it is not possible to determine a specific value in the cell representing their comparison.

Learn more about Comparison of Escherichia coli and Comamonas testosteroni here:

brainly.com/question/10902999

#SPJ6

The tough opaque tissue which acts as protective outer layer is called as the Sclera. Sclera is made up of tough, fibrous tissue. Eye is the main organ of the visual system.  

What is eye?

Eyes are the organs of the visual system. They provide living organisms with vision. Eyes detect light and convert it into electro-chemical impulses in neurons and send it to the brain.

Human eye is divided into several different parts. Human eye is 2.3 cm in diameter and filled with fluid, and following parts are present in the eye including cornea, sclera, retina, lens, pupil, optic nerves. One of these include sclera, it is the outermost protective layer of eye. This tough, fibrous tissue surrounds the eyeball and attaches to cornea, which is the clear front part of the eye.

The white part of the eye is the sclera. Over this sclera lies the conjunctiva, a clear skin layer that protects the eye from drying.

Learn more about eye here:

brainly.com/question/17146693

#SPJ5

Answer:

Some of the sensation of olfaction is actually one of pain. (Ans D)

Explanation:

Olfactory system is also known as sense of smell, is called the sensory system used for olfaction (smelling). It is known as the special sense, which have directly association with specific organs. Most reptiles, and mammals contains 2 types of olfactory system:

1) Main olfactory system: It helps in detection airborne substances.

2) Accessory olfactory system: It helps in sense fluid phase stimuli.

Answer:

Approximately 2000 species become extinct on earth each day.

Explanation:

The extinction is defined by no presence of a particular species on anywhere on the earth. It is estimated that there are 150-200 species present in environment gets extinct every day. The every day extinction of species is in the range of 200 to 2000. The high extinction rate can cause severe negative impact on the environment. The process of extinction can cause ecological imbalance.