BIOLOGY MIDDLE SCHOOL

Evolution portrays the diversity of life forms resulting from A .the original of species
B. The survival of the weakest
C. The will of creator
D. Natural selection

Answers

Answer 1
Answer:

I believe the answer is A


Related Questions

HIGH SCHOOL

The easiest and most effective way to prevent foodborne illnesses is to

Answers

The easiest and most effective way to prevent foodborne illnesses is to wash hands before using it for food handling. In this way, you can be certain that most of the  dirt in your hands would not go with the food and cause illnesses. In simple terms, you should have a good and proper hygiene.
HIGH SCHOOL

A broth containing 1 million bacterial cells is treated with an antimicrobial agent that kills 90% of the cells in 1 minute. what is the minimum amount of time it will take before all the cells in the broth are dead?

Answers

The answer is 7 minutes.

After 1 minute:
   1,000,000 - 90% * 1,000,000
= 1,000,000 - 0.9 * 1,000,000
= 1,000,000 - 900,000
= 100,000

After 2 minutes:
   100,000 - 90% * 100,000
= 100,000 - 0.9 * 100,000
= 100,000 - 90,000
= 10,000


After 3 minutes:
   10,000 - 90% * 10,000
= 10,000 - 0.9 * 10,000
= 10,000 - 9,000
= 1,000


After 4 minutes:
   1,000 - 90% * 1,000
= 1,000 - 0.9 * 1,000
= 1,000 - 900
= 100

After 5 minutes:
   100 - 90% * 100
= 100 - 0.9 * 100
= 100 - 90
= 10

After 6 minutes:
   10 - 90% * 10
= 10 - 0.9 * 10
= 10 - 9
= 1

After 7 minutes:
   1 - 90% * 1
= 1 - 0.9 * 1
= 1 - 0.9
= 0.1

Since 0.1 is not a whole bacterial cell, 7 minutes are enough to kill all bacterial cells.
COLLEGE

The ratio of weight to height squared, which correlates reasonably well with body fatness and health risks, describes which one of the following body weight assessments? A. Body mass index B. Skinfold measurements C. Hydrostatic weighing D. BodPod

Answers

A. Body Mass Index is the correct answer

Answer:

Body Mass Index

Explanation:

MIDDLE SCHOOL

Human egg cells have _____. 23 chromosomes
46 chromosomes
twice the chromosomes as body cells
half the chromosomes as sperm cells

Answers

Answer:

23 chromosomes

Explanation:

Germ cells have only half the number of chromosomes as a diploid cell one of each pair - and are termed haploid (n). In a human egg or sperm, there are 23 chromosomes, one of which is an X or Y.

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Answer: 23 chromosomes




Explanation:
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