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o-na [289]
3 years ago
11

I need help,, this should help move my grade up and i currently have an f:)

Biology
1 answer:
emmasim [6.3K]3 years ago
7 0

Answer:

first question is c.

Explanation:

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Scientists discovered that the inner core of Earth is a solid. Explain what evidence supports this thinking. Be sure to include
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Answer:

The inner core is solid because the inner core consists of a lot of pressure and high temperatures. And the more pressure and high temperatures the more dense the substance gets.

Explanation:

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5 0
3 years ago
The large deposit of sand and soil formed at the end of a river is a
Karolina [17]
A large deposit of sand and soil formed at the end of a river is a delta. When a river empties into the ocean, the current carrying smaller particles, such as soil and sand, slows down and eventually stops, causing these particles to be dropped off on the shore. This eventually leads to a triangular deposit, usually referred to as the mouth of the river.
6 0
3 years ago
Use the normal ecg trace below to determine how many seconds the trace represents as well as the heart rate.
mezya [45]
Attached is the image of the concerned ECG reading.

In reading the ECG, first you read the heart rate. To read the heart rate, you must count for the number of small boxes in between QRS complexes, specifically R-R intervals. These number of small boxes will then be used to divide 1500. In this example, there are 20 small boxes between R-R intervals. 1500 divided by 20 is 75, so the heart rate of this ECG reading is 75 beats per minute. 

<em>Another way, albeit less accurate, is to count the big squares between R-R intervals and instead of dividing it by 1500, you divide it by 300.</em>

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3 years ago
What did gregor mendel use to discover the principles that rule heredity?.
Zolol [24]

Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent. Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.

4 0
2 years ago
What do you think might be the evolutionary benefit of the milk production regulation mechanism in breastfeeding?
pochemuha

Answer:

The potential mother would be wasting her body's energy and resources constantly producing milk without using it to feed her baby, requiring for her to attain more energy, where she could have just waited until she actually gets pregnant and then start producing milk for her baby once it is close to being or already born.

8 0
3 years ago
Read 2 more answers
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