answer.
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
nasty-shy [4]
2 years ago
5

In 1980, scientists proposed a hypothesis that suggested that a meteorite struck earth and caused the mass extinction that inclu

ded the dinosaurs. why are new hypotheses often criticized?
Biology
1 answer:
Mashutka [201]2 years ago
7 0

The new hypotheses proposed by different scientists are often criticized by the others because these new hypotheses contradict the ideas and hypotheses that already exist. Adapting one's mind to a new hypotheses explaining a past event is often difficult when more clear hypotheses were already given earlier. Thus, the hypotheses suggesting the extinction of the dinosaurs are difficult for the scientific community to accept.

You might be interested in
After a skeletal muscle fiber is treated with a membrane permeable drug that speeds up the action of the SR Ca 2-ATPase, how wou
marshall27 [118]

Answer:

the twitch would be shorter

Explanation:

In muscle cells, the calcium (Ca2+) pump ATPase membrane transport proteins maintain a low cytosolic Ca2+ concentration in order to promote muscle contraction. Muscle relaxation occurs when the sarcoplasmic reticulum reabsorbs Ca2+ through the Ca2+-ATPase protein, thereby reducing intramuscular Ca2+ levels. In muscle contraction, intracellular Ca2+ levels are raised due to the release of Ca2+ from the sarcoplasmic reticulum (SR) via Ca2+-release channels. In consequence, it is expected that a specific drug that speeds up the action of (Ca2+) pump ATPase protein should shorten the contraction-relaxation cycle by increasing the velocity of muscle relaxation.

5 0
2 years ago
The term ""biomagnification"" means that a chemical ____ at each trophic level in a food chain or web.
Tasya [4]

Answer:

Increases

Explanation:

Biomagnification refers to a phenomenon in which the harmful toxic chemical gest magnified or amplified or increases in the food chain trophic level.

The biomagnification is caused by the bio-accumulation of the toxic material in the organisms.

The harmful toxic chemical enters the food chain through eating like when the crops are sprayed with pesticides and insecticides runoff in the water. From there the toxic material enters the aquatic food chain like from the planktons to fish and then to vultures.

The organisms at higher trophic level die because of the accumulation of the infected lower trophic organisms.

Thus, Increases is the correct answer.

3 0
2 years ago
Which two factors contributed to creating a truly global culture? a decrease in population growth rate improvements in telecommu
lora16 [44]

Answer:

1. Improvements in telecommunication

2. Improvements in global travel

Explanation:

Global culture refers to <u>the transmission of beliefs, values, and ideas around the world that has a significant impact in the behavior of society</u>. This has been evolving through time, especially since the Industrial Revolution. Today, we are capable of communicating with other people as quickly and easy as ever in the history of humanity and this will keep evolving as technology evolves as well.

This evolution is due to science and technology, especially to the improvements in telecommunication, which <u>enables us to communicate with people from other countries through calls, social media messagings, e-mails, etc.</u>, and to the improvements in global travel, which is <u>much more accessible today than it was before, allowing individuals to move from one country to the other easily and constantly and improving socialization between people from different cultures and backgrounds.</u>

5 0
2 years ago
Read 2 more answers
4. Myth: An organism's kingdom only describes physical characteristics.
Oksanka [162]

Answer:

4.evidence

5.Fact

Explanation:

(I hope this helps you)

5 0
2 years ago
5. A logging company cut down all the large spruce trees in an area of forest. After the area was cleared, spruce seedlings bega
andrew-mc [135]

The missing part of the question is -

" Is this Primary or Secondary Succession?"

Answer:

The correct answer is - secondary succession.

Explanation:

Recolonization of the plant and animals to habitat after a major disturbance such as flood, lava eruption, wildfire, or human disturbance is characterized as secondary succession.

In this particular case, there is secondary succession occurs, there is man-made disturbance tajes place as logging company clear the spruce trees from a habitat, and after clearing the land the spruce seedlings began to sprout, birds, rabbits recolonize to the area.

3 0
2 years ago
Other questions:
  • A ring of lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) ________. select one:
    7·1 answer
  • A normal bacterial cell carries on the chemical reaction A-----------&gt;B. A certain mutant bacterial cell cannot produce subst
    5·2 answers
  • state one reason why a glucose molecule is more likely than a sucrose molecule to diffuse through an artificial membrane
    6·2 answers
  • The presence of multiple hexokinase isozymes (I–IV) for the phosphorylation of glucose enables specific organs to regulate carbo
    12·1 answer
  • Which of these limiting factors could cause tree squirrels to lose their homes?
    11·2 answers
  • Is DNP and cyanide an inhibitor of cellular respiration?
    14·1 answer
  • Observable matter makes up about what percentage of the universe?<br> 5%<br> 12%<br> 50%<br> 95%
    10·2 answers
  • The form of DNA described as "disorganized strands of nucleotides" is
    11·2 answers
  • Write a hypothesis for Section 1 of the lab, which is about the effect the type of material has on the absorption of sunlight on
    15·2 answers
  • Suppose that a late succession plant that is surrounded by early succession plants grows at a rate of 0.5 cm per day. If the ear
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!