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Gennadij [26K]
3 years ago
10

Why is it important to study fossils ?

Biology
2 answers:
Anna11 [10]3 years ago
7 0
Fossils are among the most valuable sources of information about the Earth's history. They tell us about the organisms that lived on Earth from the time of the oldest fossils, about 3.8 billion years ago, to the present.
diamong [38]3 years ago
4 0
You can study what happened in past times on the earth.
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Who is Carolus Linnaeus <br> Need a brief explanation
Pavel [41]

Answer:

Carolus Linnaeus, also called Carl Linnaeus, Swedish Carl von Linné, (born May 23, 1707, Råshult, Småland, Sweden—died January 10, 1778, Uppsala), Swedish naturalist and explorer who was the first to frame principles for defining natural genera and species of organisms and to create a uniform system for naming them

6 0
3 years ago
The human immune system fights infection by
lesya [120]

Answer;

Antibodies.


The human immune system fights infection by releasing antibodies.


Explanation;

The immune system acts to defend the body against pathogens such as viruses, bacteria and fungi that may cause a disease.

It does so using various types of mechanism, one is by the production of antibodies.

Antibodies are proteins that are produced by the B-cell and are used by the immune system to identify and neutralize pathogens.

These antibodies also activates proteins known as complements which assist in the killing of bacteria, viruses and the infected cells.

4 0
3 years ago
Read 2 more answers
Identify the type of tissue in the following:
Snezhnost [94]

Answer:

Skin = Epithelial tissue

Bark of tree = Cork

Bone = Connective tissue

Lining of kidney tubule = Simple cuboidal epithelium

Vascular bundle = Xylem and Phloem

6 0
2 years ago
A marsh has sufficient food to sustain no more than 50 adult mallards and 250 mallard
raketka [301]
The answer is a because i took it on k12
7 0
2 years ago
Anna tries to keep her kilocalorie intake under control. She eats mostly lean meats or fish and a lot of vegetables. Yesterday,
n200080 [17]

Answer:

The calories Anna consumed for dinner is 315 kcal (300kcal). The calories that came from proteins is 108 kcal (100kcal).

Explanation:

Macronutrients are nutrients such as protein, carbohydrates, and fat that provide the energy required for the normal functioning of the body. Usually, the energy obtained from macronutrients is expressed in calories. Each gram of protein provides 4 kilocalories while each gram of fat provides 9 kilocalories. Carbohydrates per gram also provide 4 kilocalories.

Here, Anna consumed  7 grams of fat (in salmon)

, 36 grams of carbohydrates (in sweet potatoes and asparagus)  and 27 grams of protein (in salmon, sweet potatoes, and asparagus) for the dinner.

Therefore, total calories in 7 grams of fat is 7*9=63 kilocalories.

Total calories in 36 grams of carbohydrates is 36*4=144 kilocalories.

Total calories in 27 grams of protein is 27*4=108 kilocalories.

Therefore, the total calories Anna consumed for dinner is 63+144+108=315 kilocalories i.e., 300 kcal.

The calories that came from proteins is 108 calories  i.e., 100 kcal.

7 0
3 years ago
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