Whales, humans, lizards, and birds each have forelimbs that are adapted for different functions, including swimming, using tools, walking, and flying. While different in function, these forelimbs share a similar skeletal structure of the humerus, radius, and ulna. How does a comparison of the forelimbs of these organisms provide evidence for evolution?
A. These homologous structures indicate that these four organisms all share a common ancestor.
B. These analogous structures indicate that whales are descended from organisms that lived on land.
C. These analogous structures indicate that these four organisms all experienced convergent evolution.
D. These homologous structures indicate that humans, whales, and birds all evolved from a lineage of lizards.

Answer:

B

Explanation:

I pretty sure it’s B

Answer:

A. These homologous structures indicate that these four organisms all share a common ancestor.

Explanation:

B and D do not apply here and both are too broad.

C is somewhat incorrect, but A can be scientifically proven.

In the 1950s, Stanley Miller performed experiments to study the origins of life. He created an atmosphere rich in methane, hydrogen, ammonia, water, and simulated lightning. Which substances were most likely produced during Miller’s experiments?


A. protists


B. bacteria


C. amino acids


D. RNA strands

PLEASE HELP...GOD WILL BLESS YOU!
Is the mutation causing lactase persistence in a person of African descent likely to be different from that in a person of European descent? Explain.
:D

( Biomedical Science )

≛ Someone please help me!! ≛

Water birds cannot fly. Please select the best answer from the choices provided T F

Please help me!!!!!!!!!!!!

which event Mark's the beginning of dna replication​

Radiometric dating allows us to determine...
a. Which rock layers are the oldest.
b. The relative ages of the layers of rocks and the fossils within
them.
c. The exact or absolute age of rock layers.
d. A and B are correct.
e. A and C are correct.

How do the plates and mantle interact at this divergent boundary of plate boundary?

When the solution contains the same number of particles as what’s in the cell ______________

Which of these decomposers has a muscular foot to move around that are found worldwide wherever there is sufficient moisture and who eat plant particles from rocks, soil, seaweed and other objects, and eat animals that don't move. They recycle nutrients in your garden after digesting the rotting plants after the harvest.

Question 1 options:

fungi


snail


earthworm


pill bug

if we have a mouse with red eyes and short white fur and another with long brown hair and brown eyes then what will the little mouse genetics be?

What type of transport is being shown in the image below?
Glucose molecules
O Osmosis
O Facilitated diffusion
O Diffusion
O Active transport

True or fasle? Cells have to divide when becoming too large so that the cell can
maintain homeostasis.

In what direction do substances diffuse across the cell
membrane?

what was the role of revivalists of the second great awakening in the abolitionist movement? A. the revivalists of the second great awakening were against the abolitionist movement. B. many of the revivalists of the second great awakening campaigned against slavery. C. revivalists preachers didn't believe in slavery. D. most revivalists taught their enslaved people to preach to the American Indians.​

Explain what process the plant cell does that an animal cell does not.

Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers; all of the first generation of the offspring have red, axial flowers. The genes for flower color and location assort independently. If 1,000 second generation offspring resulted from the cross, approximately how many of them would you expect to have red, terminal flowers

What did Erwin Chargaff discover?

Which of the following energy producing technologies can be beneficial to soil quality

A. Biomass
B. Solar
C. Wind
D. Oil

When a person bends a glow stick a small chamber inside it breaks releasing a substance that reacts with other substances inside a glow stick the reaction takes place causing the glow stick to glow. What type of energy transformation is this

What is the distance and displacement? pls ​

The shark and remora fish have a __________________ relationship. The remora fish benefits by attaching itself to a shark and eating scraps and pieces of fish that the shark does not eat. The shark is not harmed and does not benefit from the remora fish.

The Canadian lynx and the snowshoe hare have a predator-prey relationship. You will use two sets of population data and present them in a single graph.1.Using the second picture below,label the x-axis ‘‘Year of Study’’.Label the x-axis with data listed in the first picture.
2.Based on the sizes of the numbers for each population, create a scale on the two separate y-axes.

What is copied during replication?
O CRNA
O tRNA
O DNA
O mRNA​

Is a person who inherits a single allele for Huntington’s disease likely to develop the disorder? If so, when during his or her lifetime?

The arctic fox is uniquely adapted to its environment with white fur for camouflage, a small nose and ears and warm coat to prevent heat loss and strong paws for running and hunting. Which statement best describes how the arctic fox population may have adapted to its environment over time?
Choose the correct answer.


Foxes were bred to meet human needs for white fur.

Foxes developed smaller ears and noses in response to their cold climate. They were able to survive and pass this trait on to their offspring.

Foxes changed their fur to white to hide from predators and disguise themselves from their prey. They were able to survive and pass this trait on to their offspring.

Variation existed in the traits of the fox population. Foxes with smaller ears and noses were able to stay warmer and were more likely to survive and reproduce to pass their genes on to offspring. Over time, the fox population showed a shift to smaller ears and noses.

Which is the best example of a response to an external stimulus?

drinking water after a long run
avoiding the sun by looking for food at night
a hungry bear hunting for food
falling asleep in the treetops of a forest

What processes need to occur in order for weathered pieces of a metamorphic rock to transform into a sedimentary rock?
A
heat and pressure

B
melting and cooling

C
cementation and compaction

where does transcription take place in eukaryotic cells