Indicate whether the following are acidic, basic, or neutral solutionH3O+ = 10^-7

pH = 2

H3O+ = 10^-10

pH = 9

H3O+ = 10^-1

Answers

Answer 1
Answer: neutral
acidic
acidic
basic
basic
Answer 2
Answer:

neutral, acidic, acidic, basic, basic


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A student uses a balance to determine the mass of a feather. Which is most likely to be the correct measurement ?

Answers

Considering how light a single feather is, the measure used should be something for measuring small weights such as a milligram or a gram.

Many viruses released into the air survive for onlyshort periods of time. Which of the following is the most
likely reason for this?

A. Viruses attract antibodies in the atmosphere.

B. Viruses require a low atmospheric pressure.

C. Viruses are hosts for bacteria that eventually
destroy them.

D. Viruses are dependent on host cells of living
organisms.

Answers

A virus doesn't do real metabolism, but uses the host cell. The correct answer is D.

Answer:

D

Explanation:

Without a host a virus is without key nutrients to survive

Medical science provides many ways to diagnose the cause of infertility and to treat it. . . What is the procedure that involves “washing” to separate healthy sperm from the unhealthy ones, and then placing this concentration of healthy sperm into the uterus around the time of ovulation?.

Answers

The answer is Intrauterine insemination.

  • In thistechnique of interauterine insemination, the female is given ovulation stimulating hormone or medication and after this monitoring is done to determine when the eggs mature.
  • After ovulation, a semen sample is washed to separate the sperms from the seminal fluid( removing the unhealthy ones).
  • Then a catheter is used to transfer the sperm or to insert the sperm directly in the uterus.
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Answer:

intrauterine insemination

Explanation:

quizlet said so

A lion eating a zebra is an example of which characteristic of life?

Answers

Hi there!  

A lion eating a zebra is an example of growing and developing, since the energy and proteins that have been transferred to the lion from the zebra help the lion grow.  

Hope this helps!

Well its apart of the food chain, but is also apart of the circle of life if you call it that. If you need more detail please ask in the comments I can explain more if needed

Angiosperms _____. have flowers have cones are nonvascular are seedless

Answers


Angiosperms have flowers.

Angiosperms are plants which produce flowers and are thus commonly referred to as the flowering plants.

All angiosperms  produce flowers at some stage in their life. Flowers are important to the angiosperms  because they serve as the reproductive organ for the plant, providing a means for the plant to propagate itself. 

Angiosperms are the largest group of plants on earth. They account for approximately 80% of all known living plants. There are about 270,000 known species of angiosperms that live on the earth today.




A structure outside the plasma membrane in some cells is the _____

Answers

Answer:

The nucleus i believe

Explanation: