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iren [92.7K]
3 years ago
12

Name one reason scientists believe that all life evolved from a single common ancestor.

Biology
1 answer:
xz_007 [3.2K]3 years ago
7 0
Charles Darwin. He is a biologist most know for his theory of evolution and the process of natural selection. 
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WILL MARK BRAINLIEST!!
Rom4ik [11]

Hello love! The answer to your question is plants have cell walls, one large vacuole per cell, and chloroplasts while animals have a centriole which isn't found in most plants

Hope this helps!!!

4 0
3 years ago
Which of these is an example of a chemical change?
lawyer [7]

The correct options are, frying an egg and burning candle.

Explanation :

Physical change : It is a change in which no new compounds are formed only changes occurs in size or state of substance. In this, there is no changes in the substance or compound.

Chemical change : It is a change in which a new compounds are formed by the chemical reaction. Changes occurs in their chemical composition and properties.

Frying an egg : It is a chemical change because a new substance is form by heating.

Burning a candle : It is chemical change because new substances are formed (carbon dioxide, water and heat) by burning.

Boiling alcohol : It is physical change because only changes in the state.

Melting and ice : It is a physical change because only changes in the state.

Making coffee : It is a physical change because no new substance is formed.

Therefore, frying an egg and burning candle are the example of chemical change.

4 0
3 years ago
Read 2 more answers
Read each question carefully, and answer yes or no to each one. At the end of each section, follow the directions to score your
Nataly_w [17]

Answer:

Section 1: Physical Fitness

Do you exercise or play a sport for at least 30 minutes three or more times a week? Yes

Do you stretch before and after exercising? No

Do you warm up before exercising and cool down afterward? No

Do you think that you are at a healthy weight? Yes

Are you mostly happy with the way your body looks and feels? Yes

Do you think you have enough energy? Yes

Give yourself one point for each No response and two points for each Yes response. Section score: _10___

Section 2: Family History

Do you have a family member who:

has high blood pressure? Yes

has diabetes? Yes

has heart disease? No

has cancer? Yes

is extremely overweight? No

Give yourself one point for each Yes response and two points for each No response. Section score: ___7_

Section 3: Hygiene and Medical Care

Do you floss your teeth every day? Yes

Do you brush your teeth at least twice a day? Yes

Do you visit the dentist at least once a year? Yes

Do you use sunscreen? No

Do you know basic first aid? Yes

Are all your immunizations current? Yes

Do you get your vision and hearing checked each year? Yes

Do you see the doctor for a check-up once each year? Yes

Do you feel you get enough sleep at night? Yes

Do you know the warning signs for cancer? No

Give yourself one point for each No response and two points for each Yes response. Section score: _18___

Section 4: Nutrition

Do you eat a lot of red meat or eggs? No

Do you add salt to your food? Yes

Do you add sugar to your food? Yes

Do you eat a lot of high-fat or high-sugar foods? Yes

Do you add butter or cheese to your food? Yes

Do you choose fried foods more often than baked or broiled foods? Yes

Do you drink caffeinated drinks, such as coffee or sodas? Yes

Do you skip meals? No

Give yourself one point for each Yes response and two points for each No response. Section score: _10___

Section 5: Drug Use

Do you smoke or chew tobacco? No

Do you drink alcohol? No

Have you ever used marijuana or other illegal drugs? No

Have you ever abused a prescription drug? No

Give yourself zero points for each Yes response and two points for each No response. Section score: __8__

Section 6: Safety

Have you ever ridden with drivers who were under the influence of alcohol or drugs? No

Have you ever ridden with drivers who speed or disobey traffic laws?no

Do you ever forget to wear your seat belt? No

Do you ever forget to wear a helmet when riding a bike or skateboarding? No

Do you ever play with matches or hazardous materials? No

Is there a gun in your house? No

Give yourself zero points for each Yes response and two points for each No response. Section score: __12__

Section 7: Emotional and Social Health

Do you have hobbies or activities that you enjoy? Yes

Do you give your best effort when doing your work? Yes

Do you find it easy to laugh? Yes

Do you express anger in an appropriate way? Yes

Do you easily fall asleep at night? Yes

Do you share personal problems with someone you trust? Yes

Do you feel well-liked by others? Yes

Do you have someone you can turn to if you need help? Yes

Are your family members and close friends in good health? Yes

Are you generally happy? Yes

Give yourself one point for each No response and two points for each Yes response. Section score: _20___

Total Health Score: __85__

This is mine so it's not going to be accurate for you but please can I get a brainliest.

4 0
3 years ago
If you spend a lot of time in the sun, then you will increase your risk of skin cancer. Manipulated variable (Independent Variab
serg [7]

Answer:

you will get sunburn

Explanation:

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3 0
3 years ago
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What is an endrocrine function
olchik [2.2K]

Answer: The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

Explanation:

7 0
3 years ago
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