BIOLOGY HIGH SCHOOL

Earth worms have an ____ A. Hydroskeleton B.exoskeleton C. Endoskeleton , birds have an A. B. or C. And spiders have A. B. C. Anyone who answers this thank you so much!!!

Answers

Answer 1
Answer: Earth worms: A
birds: C
spiders: B

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HIGH SCHOOL

Contrast the major differences between the organization of dna in viruses and bacteria versus eukaryotes.

Answers

Answer:

    Viruses and bacteria have a very specific way of organizing their own genetic  material inside themselves.

Explanation:

     On viruses, this can vary a little bit, but most of them will have their genetic material not confinated in a nucleus, but so, spread along all of the cytoplasm. This can be because of very different reasons, and the bacteria have the same thing here, they too have their genetic material spread all across their cytoplasm.

     Instead of that, eukaryotes have something that the scientists call the nucleus. This nucleus contains all the DNA a cell needs to produce the proteins for the body, but remember, the protein making process happens inside and out of the nucleus.

Bacteria-loose DNA, No Mitochondria, No Nucluse, have Ribosome,
Eukarotes,Contain microganism 

75% sure
HIGH SCHOOL

Which is a biotic factor that affects the size of population in a specific ecosystem

Answers

Answer:

The increase in the number of tertiary and secondary consumers causes ecological imbalances because they quickly consume primary consumers leading to their disappearance in the ecosystem. This situation can also lead to an increase in the biomass of the producers since they no longer have anyone to consume them

The number and kinds of predators in that ecosystem.  
HIGH SCHOOL

Which is not a characteristic of fungi

Answers

Their cell walls consist mainly of cellulose
Fungi can'r perform the process of "Photosynthesis", they are heterogeneous.!!

Hope this helps!
MIDDLE SCHOOL

Which process is an example of a chemical change a metal railing rusting in damp weather
a piece of wood shrinking as it dries out
steam rising from a boiling pot of soup
alcohol evaporating from a cotton swab

Answers

Metal rusting in damp weather
MIDDLE SCHOOL

What contributes the most to beach erosion?

Answers

Waves, generated by storms, wind, or fast moving motor craft, can cause coastal erosion, which may take the form of long-term losses of sediment and rocks, or merely the temporary redistribution of coastal sediments; erosion in one location may result in accretion nearby.
HIGH SCHOOL

Describe two desert animals and their adaptation that help them survive

Answers

Example of two desert animals and the adaptations that help them survive are the following:

1. Reptiles – These dessert animals have thick, scaly skin to help prevent water loss.

2. Most desert animals are nocturnal and are active mainly at night when it's cooler.






MIDDLE SCHOOL

Which discovery is most directly related to careers in biology? A. the formation of a new space program to launch flights to Mars
B. the discovery of the genes that are responsible for Alzheimer’s disease
C. the unearthing of an ancient civilized community in the Pacific Northwest
D. the creation of a new synthetic material that is used in electronics manufacturing

Answers

The discovery that is related to careers in biology isB. The discovery of the genes that are responsible for Alzheimer’s disease

Explanation:

Biology is the study of Life and living organisms. Any person associated with research or scientific studies of living organism is directly related to careers in biology.

Alzheimer's disease is a genetic defect caused in living beings. The genes causing this disease are:

  • Amyloid precursor protein (APP)
  • Presenilin 1 (PSEN1)
  • Presenilin 2 (PSEN2)

Due to mutation of these genes the nerve cells get damaged and patients begin to show the symptoms usually at the age of 60 and above. The genetic test results can help in early prevention and cure to Alzheimer's disease. Though research is being continued to find if there are more genes involved.

MIDDLE SCHOOL

How does the height of the first hill of a roller coaster affect the remainder of the ride ?

Answers

It depends on how much kinetic energy builds up on the way down,because kinetic energy is motion energy so it goes faster the more kinetic energy it builds up.
MIDDLE SCHOOL

Why are honeybees called "social insects"?

Answers

Because they live in large well organized family groups in a bees nest. And they complete hard complex tasks.
Becuase they all live in welll organized groups
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