1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nezavi [6.7K]
3 years ago
12

Natural selection could not occur without:

Biology
1 answer:
Alenkinab [10]3 years ago
5 0
<span>A. genetic variation in species
</span>
You might be interested in
How do materials move within the earth.
statuscvo [17]

The new materials from the center of the Earth rises, so the hardens and pushes older pieces of the Earth away from each other, which causes the movement of materials.

<h3>How do materials move within the earth?</h3>

The Earth's thermal energy is the main cause of the movement of materials within the earth surface. The Large continent-size plates moves slowly about the Earth's surface, which is driven by the thermal energy. The Convection currents transfer hot, buoyant magma to the lithosphere's layer at plate boundaries and hot spots. Convection currents also transfer denser, cooler material from the crust to Earth's interior through the process of subduction.

So we can conclude that: The new materials from the center of the Earth rises, so the hardens and pushes older pieces of the Earth away from each other, which causes the movement of materials.

Learn more about Earth here: brainly.com/question/746553

#SPJ1

8 0
1 year ago
Theoretically, living organisms are capable of producing populations of infinite size. However, this never occurs because popula
yuradex [85]

Answer:

Biotic and Abiotic factors

Explanation:

Biotic factors such as predators can limit the population size.

Abiotic factors such as drought,torrential rainfalls,climate change,dessication etc.

4 0
3 years ago
Whats your cells first source for energy and where is it stored?
alexandr402 [8]

Answer: Carbohydrates, or carbs, are sugar molecules. Along with proteins and fats, carbohydrates are one of three main nutrients found in foods and drinks. Your body breaks down carbohydrates into glucose. Glucose, or blood sugar, is the main source of energy for your body's cells, tissues, and organs.

3 0
2 years ago
Read 2 more answers
The biological levels of organization range from a single cell all the way up to the biosphere in a highly structured hierarchy.
ELEN [110]

Answer:

B) Tissue is made of different types of cells.

D) Organs are made of different types of tissue.

Explanation:

The tissues are made of different types of cells. The organs are also made of different types of tissue. There is no need of same types of tissues to make organs. Thus, option (B) and (D) is correct answer.

7 0
3 years ago
Read 2 more answers
Which statement best describes the cell membrane?
vredina [299]

Answer:C). A phospholipid bilayer with proteins

Explanation: A cell membrane is a phospholipid bilayer with proteins embedded in it. The fatty acyl chains of the phospholipids are non polar and hydrophobic while the phosphate groups are polar and hydrophilic. The hydrophobic regions of the phospholipids interact with each by facing each other, forming a bilayer with a fluid interior. The polar head groups face outward interacting with the external environment of the cell. Proteins are embedded in this bilayer and they float in this sea of phospholipids. Proteins anchored to the membrane through interactions between the hydrophobic regions of the phospholipids and the amino acid side chains of the proteins. These lipids and proteins swim laterally in each face of the bilayer but movement from one face of the bilayer to another is restricted.

5 0
3 years ago
Other questions:
  • Rerouting a river could affect fishing in the river downstream because
    8·2 answers
  • The name of the receptor region containing hair cells involved in detecting static equilibrium is
    6·1 answer
  • How do basophil cells react when a pathogen enters the body
    7·1 answer
  • What could cause an igneous rock to become soil?
    12·2 answers
  • Which organ filters out urea, water, and salt as blood flows through it?
    14·1 answer
  • GAS is an acronym for ________.Select one: a. general adaptation syndrome. b. general acceleration due to stress. c. growth adju
    15·1 answer
  • HELP PLEASE !!!
    6·1 answer
  • What is one transition word in my life with chimpanzees
    8·1 answer
  • If one half of the DNA ladder is above sequence, what is the other side of the ladder’s DNA sequence?
    5·1 answer
  • An owl,
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!