1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
HACTEHA [7]
3 years ago
5

b. In 1979, the estimated elephant population was 1.3 million and in 2007 it was 640,000. By approximately what percentage did t

he elephant population decline over this time period? (Show your work.) How does this compare to the change in range over this same time period?
Biology
1 answer:
saveliy_v [14]3 years ago
4 0

Answer:

The initial amount, 1.3 million = 1,300,000 is the 100%.

now, 640,000 is a given percentage (lower than 100%) of that.

How we can find it?

suppose that 640,000 represents an x%.

Then we have that the quotient between the actual quantities and the percentages must be the same

(640,000/1,300,000) = x%/100%

x% = (640,000/1,300,000)*100% = 49.23%

Then the percentage declined is:

100% - 49.23% = 50.77%

The other question can not be answered with the given information.

You might be interested in
Which statements explain reasons why unconformities occur? Check all that apply.
likoan [24]

Answer:

3. Rocks erode and sediment is deposited.

4. No sediment is deposited over a long time.

Explanation:

An unconfomity is a break in stratigraphic record of a place usually as a result of non-deposition or erosion.

In a sequence of sedimentary rock strata some surfaces called unconformity surfaces gives clues about the depositional history of a particular place. During an unconfomity, there is usually no sediment deposition and when deposition resumes, the underlying rocks and the new ones will not share the same attribute especially by age. Unconformity can also be as a result of erosion of a sequence.

In the case of non- conformity, a sedimentary rock is deposited above an igneous or sedimentary rock. Option 5 is a simple example of an igneous intrusion called a sill. It is not unconformity.

3 0
3 years ago
Read 2 more answers
Which of these body cavities is a long, continuous cavity located on the back of the body?
densk [106]

Dorsal Cavity

Explanation:

The body cavity that is long, continuous and located in the back of the body is the Dorsal cavity

8 0
3 years ago
Create a Punnett square using the shape of pods trait crossing Heterozygous parents. What percentage of the offspring will be he
goldfiish [28.3K]
50% will be heterozygous. 50% will be homozygous. 75% will have the same phenotype as their parents.

8 0
3 years ago
which scientist theory did redi and pasteur's experiments refute? a.the theory of evolution b.the theory of spontaneous generati
Neporo4naja [7]
I believe it was the Cell theory. :)
3 0
3 years ago
Give an example (except for a plant responding to light) of an organism's response to a stimulus.
kolezko [41]

Answer:

plants For example, phototropism is the plant's response to stimulus, i.e. sunlight. A plant hormone “auxin” keeps the plant's direction towards the sun by activating the growth in a particular part of a stem. Similarly, gravitropism in plants responds to the stimulus, i.e. gravity

Explanation:

mark me brainliest!!

4 0
2 years ago
Other questions:
  • Which is the mRNA made during transcription of the following DNA template?
    12·2 answers
  • Which organs preform both mechanical digestion and chemical digestion of food
    11·2 answers
  • Science and technology have both positive and negative effects on society. What could be a negative effect of using cell phones?
    12·2 answers
  • How far away is mars from earth in inches
    8·1 answer
  • Which two structures would provide a positive identification of an animal cell under a microscope?
    5·1 answer
  • A molecule is involved in a chemical reaction, causing the arrangement of its atoms to change. What is the result of this proces
    9·1 answer
  • Which one of the principles posits that heritable characteristics that provide a survival or reproductive advantage are more lik
    7·1 answer
  • Given what we know about Mendelian genetics, what is the genotype of pea plants with white flowers? White is a recessive trait w
    6·1 answer
  • Which plant structure absorbs most of the water and nutrients needed from the soil? tap roots secondary roots root hairs fibrous
    5·1 answer
  • Which minerals and gems are commonly mined in the Tropical North?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!