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
Nana76 [90]
2 years ago
7

Ddt was widely used as a pesticide for 20 years. Its use was banned after studies showed severe side effects were evident in hum

ans, the environment, and animals as a result of ddt. Which reason best explains why the side effects of ddt were so harmful?.
Biology
1 answer:
emmasim [6.3K]2 years ago
8 0

Answer:

One major side effect of DDT was the extreme damage to bird populations. DDT caused the shells of bird eggs to become extremely thin, which made them prone to breaking from minor disturbances and failing to thrive due to temperature regulation issues. It also slowly poisoned animals, especially birds that fed on insects that were poisoned by DDT. A notable bird species that was affected by DDT is the bald eagle. At one point in the 1960s, bald eagles nearly went extinct due to various effects of DDT. The threat of one of the most recognizable animals in America going extinct led to lawmakers trying to ban DDT.

You might be interested in
Whereas cloning is commonly used in studies of bacteria, Dolly the sheep was the only animal ever cloned.
nignag [31]

Answer:

False

Explanation:

I heard of that sheep before I leard about this in like 6th or fith answer is false

Two years later, researchers in Japan cloned eight calves from a single cow, but only four survived. Besides cattle and sheep, other mammals that have been cloned from somatic cells include: cat, deer, dog, horse, mule, ox, rabbit and rat

6 0
3 years ago
By signing the Kyoto Protocol, a country commits to decrease its greenhouse gas emissions. Which ecological issue does this prot
Otrada [13]

Answer:

it addresses Loss of Biodiversity

Explanation:

if you read the question you find a key word which is decrease

hope this helped

4 0
3 years ago
Which type of organisms is able to cause a contagious disease A: plant B:animal C:bacteria D:virus
VMariaS [17]
The answer is either C because both C and D cause disease, but only C is a living organism. Hope that helps!

7 0
4 years ago
Read 2 more answers
Viruses and bacteria can infect human cells. Bacteria are living organisms, while viruses are not. How do you think the treatmen
Tatiana [17]

Answer:

hope it helps

Explanation:

1) antibiotic drugs can kill bacteria however, they are not effective against viruses

2) some bacteria's help to digest foods and speed up enzyme reactions. Some bacteria cells destroy disease causing cells

4 0
3 years ago
Random orientation of homologous pairs of chromosomes during meiosis I results in alternative arrangements that contribute to ge
iogann1982 [59]

Random orientation of homologous pairs of chromosomes during meiosis I results in alternative arrangements that contribute to genetic variation in offspring. This is called "independent assortment".

<u>Explanation:</u>

The sets of homologous chromosomes, also recognized as bivalents or tetrads, align along the metaphase plate in a random order in metaphase I of meiosis I. Another way for cells to incorporate genetic variation is by spontaneous orientation. Mendel's independent assortment law stipulates that, independently of one another, the alleles of two or more different genes are sorted into gamets.

In other terms, for one gene, the allele that a gamete receives does not affect the allele that is obtained for another.Genetic recombination (by random segregation) and crossing over during meiosis creates daughter cells each containing different combinations of maternally and paternally coded genes.

4 0
3 years ago
Other questions:
  • Show work on 10.00-6.11
    7·1 answer
  • What kingdoms of organisms have a cell wall
    13·2 answers
  • Which of the following sources of pollution would be the most difficult to track and regulate? a. lawn fertilizer runoff b. a wa
    13·2 answers
  • Use evidence from your chosen maps to explain how hydrosphere and atmosphere are related
    8·1 answer
  • The endometrium
    12·1 answer
  • Acid rain occurs when sulfur dioxide in the atmosphere is oxidized in the presence of nitrogen dioxide. Acid rain is an example
    14·2 answers
  • In the ocean, plants and other photosynthetic organisms take in carbon. This carbon is transferred through the food web into the
    13·1 answer
  • PLEASE PLEASE PLEASE HELP!!!!!!
    11·1 answer
  • The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of ener
    14·1 answer
  • Why must the bonds of these molecules be broken before anything else happens?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!