What is species extinction and what are the primary causes?

Answer:

The extinction of any species is an irreversible loss of part of the biological richness of the Earth. ... Extinction can be a natural occurrence caused by an unpredictable catastrophe, chronic environmental stress, or ecological interactions such as competition, disease, or predation.

HELP please PLEASEWhat are nostrils full of?

tiny hairs

olfactory nerves

mucus

olfactory bulbs

How does the structure of a root hair cell support its function? Explain your answer and I will give brainliest.

What does a poison control center do?

Select whether the description is a Bacteria, Archaebacteria, or Protist. Some will have more than one answer.

have eukaryotic cells -

have prokaryotic cells -

can cause malaria -

can live in extreme environments -

can only be unicellular -

can be multicellular or unicellular -

provide about 50% of Earth’s oxygen -

can cause strep throat and tuberculosis -

cause no known diseases in humans -

Which of the following statements is true?

Geocentric theory was initially rejected.
Bode's Law incorrectly predicted the location of Uranus.
The ocean is primarily made of chlorine and oxygen.
Cepheid variables can be used to determine the temperature of stars.

PLSSS HELP PLSSSSS ILL GIVE BRAINLIEST WTV U WANT PLSSS

What is the difference between reflecting and refracting telescopes?

1.Identify the source of energy for most food chains.

2.Identify the foundation of all food chains.


3.Identify two processes by which organisms can use energy to produce their own food.

4.Identify the energy source for chemosynthetic bacteria and where they are typically found?


5.Identify the type of organism that must always occupy the 1st level of a food chain.
Define herbivore.


6.Herbivores are also called _________________________.

7.What are animals called that feed on herbivores?


8.Identify the type of organism that hunts and kills (preys on) other organisms.

9._________________ consumers eat secondary consumers.


10.Create a realistic food chain with a producer and 3 consumers.

The diagram below represents 4 species of Bacteria. Which statement is correct concerning the chances of survival for the species if there is a change in the environment? Captionless Image A) Species A has the best chance of survival because it has the most genetic variation B) Species B has the best chance of survival because it has no genetic mutations C) Neither species B nor D will survive because they will compete for the same resources D) None of the species will survive because bacteria reproduce asexually

Please find the correct answer

can anyone help me get caught up this is only on of the 12 assignments i need help on

How are skills learned in older generations passes down to younger generations?

How minerals formed in Rocky Mountains?(explain it please)
20 points!

Sometimes, two of the plates that make up Earth's surface come together and push against each other. What new landforms may begin to develop as a result?

Please help me if u get correct u get branliest and thanks! :D

Pls answer for branliest and pls no links and no trolls :D ty

Think of examples of how the following parts of natural selection exist within mice populations:

Overproduction-

Competition-

Variation -

Selection-

1: Barnacles Role:
Effect/Benefit:

2: Whale Role:
Effect/Benefit:

3: Ticks Role:
Effect/Benefit:

4: Humans Role:
Effect/Benefit:

5:Fungi (in lichen) Role:
Effect/Benefit:

6:Algae (in lichen) Role:
Effect/Benefit:

7: Remora Role:
Effect/Benefit:

8: Shark Role:
Effect/Benefit:

9: Silverfish Role:
Effect/Benefit:

Label the following diagram of the ear by matching the number of the part with its correct name in the box below. (PLEASE HELP ASAP)

PLSSS HELP PLSSSSS ILL GIVE BRAINLIEST WTV U WANT

Consider the parts of a polar ecosystem and a desert ecosystem.
– Identify one abiotic factor present in each type of ecosystem.
– Identify one biotic factor present in each type of ecosystem.
– Explain why both the abiotic and biotic factors are different in each ecosystem. Use examples from each ecosystem in your explanation.

PLEASEEE HELPPPPP:) thank you so so much!!

The humpback whale is a large marine mammal that lives wide spread throughout the North Pacific Ocean. Barnacles are small marine crustaceans that will attach themselves to the bodies of humpback whales. Though the barnacles grow on the skin of whales to filter feed, they are too small to harm the whale. This example best defines which of the following


commensalism


mutualism


parasitism


predation

(LOOK AT THE IMAGE!!)

1. If each household emits 60 metric tons of CO2 on average and 21 metric tons are from transportation, how many are from the bus?

2. How can the town planner make changes to policy to reduce that number?

What has happened to the ecosystem since the wolf has been reintroduced to Yellowstone?

Can someone answer this?

Two great snowbirds are migrating. Both birds have a mass of 100 g under flag it 90 km/h. Birds are is flying 2.0 KM above the ground, and very cute is fine 2.5 KM above the ground. Based on the information above, which statement best describes the energy of the two birds?

Many tiny plants can be seen developing asexually along the edge of the mother-of-thousands plant leaf. The tiny plants eventually drop to the ground and grow into new plants of the same species. One way this form of reproduction differs from sexual reproduction is A) more genetic variations are seen in the offspring B) there is a greater chance for mutations to occur C) the offspring and the parents are genetically identical D) the new plants possess the combined genes of both parents

(Need the answer as soon as possible.)

"Scientists are not sure whether the microbes come
from the seawater surrounding the vents or from deep
inside Earth beneath the vents, but they appear as fuzzy
white material on the seafloor near the vents."
(Paragraph 5)


How does this scientific uncertainty most affect the
passage?

1. It provides a possible reason why microbes can
withstand toxic chemicals.


2. It suggests a theory about why microbes tend to
thrive near hydrothermal vents.

3. It casts doubt about the microbes' function as
producers in the deep-ocean food web.

4. It shows the need for further research to
determine the significance of the microbes
origins.


(No links)

can you fill in the blank? No links, please.

1. The ocean has a significant impact on a region’s climate. Since water has such a high heat capacity, air masses over oceans __________ in temperature, compared to air masses over land.

A) Are always higher
B) Have wide ranges
C) Have narrow ranges

2. Ocean water, in equatorial regions, stores large amounts of solar energy because of the direct sunlight it receives. Solar energy can be distributed to higher latitudes by __________

A) Deep ocean currents
B) Surface currents
C) Ocean waves

3. The distribution of solar energy by warm ocean currents causes regions at higher latitudes, such as the United Kingdom, to have a __________ climate, compared to other locations at the same latitude.

A) More moderate
B) More extreme
C) Colder

*Categorized in Biology because I couldn’t find Science*