Vestigial structures, such as hip bones in whales and appendixes
in humans, are those that have little or no function for the
organism. What is the most likely reason for this loss of function
over time?
The organism is undergoing speciation.
The organism is experiencing genetic drift.
The structure was over utilized by the organism.
The structure was not highly beneficial to the organism.

Answer:

A.

Explanation:

Humans used to use the appendix for good bacterial health in the gut. People used to drink dirty water and eat food that had lots of bacteria. The appendix would save them from infection.

How does the carbon in grass become part of a lion?
choose:
The lion eats the grass
Carbon from grass doesn't end up in a lion.
The carbon ends up in the lion's food chain.
The lion breathes in carbon given out by the plant

When we look at stars, we notice that some appear brighter than others. Sirius looks much brighter than Rigel, but is it really brighter? Or is Sirius much closer to Earth, giving it the appearance of being brighter? Actually, Sirius is about one hundred times closer to Earth than Rigel. If the two stars were the same distance from Earth, Rigel would appear much brighter. -We use two terms to reference the brightness of a star: absolute magnitude and apparent magnitude. Absolute magnitude is the measure of the light given off by a star, while apparent magnitude refers to the amount of light received on Earth. The color of a star indicates its temperature. Blue-white stars are very hot, while orange-red stars are relatively cool. In the early 1900's Ejnar Hertzsprung and Henry Russell noticed that the higher the temperature of a star, the greater the star’s absolute magnitude. They developed a graph that depicts this relationship called the H-R diagram. Most known stars fit into a diagonal band that runs from the upper left to the lower right of the diagram. This diagonal band is called the main sequence. About 90% of all stars are main sequence stars. Most stars are currently classified using the letters O, B, A, F, G, K, and M, where O stars are the hottest and the letter sequence indicates successively cooler stars down to the coolest M class. Betelgeuse is in the red spectral class. It is one of the largest of stars with extremely high luminosity although it has a relatively low surface temperature. How would Betelgeuse be classified?

A. Giant
B. Supergiant
C. White Dwarf
D. Main Sequence

I need answers for 5 and 6 please

Humans rely on the ocean for a wide variety of resources. However, many human activities impact
ocean ecosystems. Although some of these impacts have positive consequences, many lead to
negative consequences. Below is a list of human activities and a list of some consequences of
those activities, Match each activity with the consequences it can cause. Keep in mind that human
activities may have several consequences.

What is the purpose of the ATP and NADPH produced in the light reactions of photosynthesis?
A. to transfer light energy to excited electrons
B. to stop the electron transport chain
C. to act as carrier proteins in inner mitochondrial membranes
D. to transfer energy to compounds forming three carbon sugars

OPEN ENDED QUESTION
Why is the Cuyahoga River fire an
important event in dealing with water
pollution?

PLEASE HELP. 20 POINTS

Alpha-1 is a hereditary disorder that affects the lungs. In order for the disease to develop, a child must inherit one recessive allele from each parent. Suppose Caryn’s mother has Alpha-1 and her father carries only one recessive allele. Which of the following claim best describes Caryn’s situation?


Caryn has no chance of developing Alpha-1.

Caryn has no chance of being a carrier for Alpha-1.

Caryn has a 50 percent chance of developing Alpha-1.

Caryn has a 100 percent chance of developing Alpha-1.

In the process of breaking down dead plant and animal materials, decomposers release nutrients back into the soil. True or false

1. I represent the number of protons in the nucleus of an element.
Pls tell me the answer its for a word search?!?!?!​

A_____ can rush downhill as a huge mass of soil,water,and rock,leaving a bare scar in the hillside

Which of the following are functions of protein molecules in an animal?


1. Protein molecules help cells carry out many of their functions, and they are part of body structures such as hair and nails.

2. Protein molecules help cells carry out many of their functions, but they are not part of body structures such as hair and nails.

3. Protein molecules do not help cells carry out many of their functions, and they are not part of body structures such as hair and nails.

4. Protein molecules are part of body structures such as hair and nails, but they do not help cells carry out many of their functions.

Some individuals who are infected with malaria develop anemia, which is a deficiency of red blood cells.
a) How could anemia benefit these individuals? b) If they have children will the children be anemic?

Describe one feature of Earth's atmosphere that allows life to thrive on its surface.

Just a reminder to take a break! Your brain is hurting and you need some water! Use this app to understand not to cheat too!

match each term to its definition

Heart muscle cells remain in the Go stage. Why might this be important for
cardiac function?

Please Help with theses 3 questions. Extra points and brainiest will be given!!!!l

When an organism completely dies out, it is called

find the number of atp molecules used in the beginning of glycolysis​

which substance is a reactant in photosynthesis

Which of the following are the major "reservoirs" of carbon in the environment?
Select one or more:
A. the Sun
B. natural habitats
C. the Earth's interior
D. the atmosphere
E. sediments
E the oceans
G. the human body

ASAP WILL GIVE BRAINLIEST
Harry wrote the following examples of homeostasis:

Example 1: An electric blanket provides warmth when it's cold
Example 2: The kidney and other organs remove waste from the human body
Example 3: Some animals migrate to find food
Example 4: Power plants provide electricity for homes


Which of these is a correct example of homeostasis?

Example 1
Example 2
Example 3
Example 4

Which is considered a modern space exploration project rather than a historical or future project

How do scientists use ice to study ancient climates

during which stage of formation are sediments finally solidified into rock?

What precautions should be made to be sure that there is little chance of negative consequences from an oil spill?

The picture shows a girl with a widow's peak.



The girl has a widow's peak because of her
genes, which are located in chromosomes in her cells' nuclei.
hormones, which are passed on from previous generations.
nutrition, and indicates her needs are met.
environment, in which it is an advantage.

This was simulation. What are some variables that this peppered moths simulation does not address?

some genetically engineered fish can mate with wild members of their species. Farm raised fish are often genetically modified. What can happen to the wild species of fish if they mate with gmos

WILL MARK BRAINLIEST + 50 pts


Evidence: Mrs. Macy is very dissatisfied with her tomato plants this year. If she doesn’t turn it around, it will be challenging to put food on the table. There has been a low yield of fruit and the plants are short and stunted. Some of the leaves have a mosaic pattern of dark spots on their leaves.


Conclusions:

Suspected disease: ________________________________________________________




Evidence: Farmers Burns and Dexter-Kemp are at their wits end. It has been a rough year farming their crop of oranges. They have noticed an increase in insects climbing on their fruit. The veins on the leaves are yellow and there is splotchy mottling all over the leaves. Some of the leaves are falling off prematurely. After the fruit ripens, it starts to turn green.

Conclusions:
Suspected disease: ________________________________________________________