Biology Middle School
Answers
Answer 1
C. humus
the answer is humus cause it really has nothing to do with soil.
Answer 2
Answer:
Air.
Explanation:
Humus,mineral matter are soil.
Even the worms inrich the soil.
Related Questions
Which is used to create copies of genetic material for DNA fingerprinting? O A. PCR
O B. Gel electrophoresis
O
C. Nuclear transfer
O
D. Reverse transcriptase
SUBMIT
Answers
Answer: A
Explanation: PCR help to create multiples of copies, it can produce millions of copies of DNA sequence in a test type in limited or few hours. PCR has revolutionize molecular biology, and it has become an essential tools for biologist, physicians or anyone who really want to work on the DNA.
Answer:
PCR
.........................
Which of the following is NOT a major component of soil? a
.
mineral matter c
.
humus
b
.
air d
.
earthworms
Answers
Answer:
d. earthworms
Explanation:
Which force helps water molecules stick together? O
A. Hydrogen bonds
O. B. Gravitational pull
O
C. lonic bonds
ES
O
D. Magnetic pull
2
Answers
Answer: A
Explanation: Hydrogen-bonding forms in liquid water as hydrogen atom of one water molecule is attached towards the oxygen atom of a neighboring water molecule; generally a proton shared by two lone electron pairs hence, the oxygen in particularly negatively charged while the hydrogen is positively charged.
Answer:
A. Hydrogen Bonds
Explanation: Uh...
What is the result of HIV in the human body ? A. Reduced number of erythrocytes B. Reduced number of thrombocytes (platelets) C. Reduced number of lymphocytes D. Increased number of lymphocytes
Answers
Answer: The correct answer is option (C) i. e. Reduced number of lymphocytes in the human body.
Explanation: HIV attack on the immune system of human body and reducing the number of white blood cells which are responsible for the defence of body against bacteria, viruses etc. HIV virus cannot reproduce and grow on its own. The HIV virus attached to the white blood cells and goes inside the white blood cells and start growing and grow in number.
A car drives 23 m/s east for 35 seconds. What is the displacement of the car in this time? A. 805 m west
B. 23 m east
C. 805 m east
D. 523 m east
Answers
Answer: 805m east
Explanation:
From the data above v=23m/s, t=35s
Average velocity= Displacement/Time.
Displacement= Average velocity X Time.
Displacement= 23 X 35= 805m
So, the correct answer is 805m east.
6. Digestion that occurs in a sac or a tube is re- ferred to as (1) phagocytic (2) intracellular (3)
extracellular (4) heterotrophic
Answers
Answer:
it b
Explanation:
because i looked it up
Phoebe is taking samples to determine the populations of aquatic life in different areas of a lake. She takes samples from different areas of the lake and finds the marine life listed in the chart below. What can Phoebe infer from the data in the table? (2 points) Location 1Location 2Location 3Location 4
Insects13201815
Crawfish8152022
Fish3111312
Other5284
Location 1 has a larger food source than location 4.
Location 3 gets more sunlight than location 2.
Crawfish prefer the food source at location 4.
Fish prefer the food source at location 1.
Answers
Answer:
Location 1 total= 29
Location 2 total= 48
Location 3 total= 59
Location 4 total= 53
Location 3 gets more sunlight than Location 2.
Crawfish prefer the food source at Location 4.
Answer:B
Explanation:
What forms the channels in the phospholipid bilayer? A) Hydrophilic Heads
B) Proteins
C) Carbohydrates
D) Lipids
The question had no answer labels, to I put them on myself.
Answers
Answer:
B) Proteins
Explanation:
Which phase occurs directly after G1
Answers
Answer:
The G1 phase of the cell cycle is followed by the S phase (DNA synthesis).
Explanation:
The interphase of the cell cycle is composed of the G1 phase, the S phase, and the G2 phase.
The G1 phase is characterized, by the cell preparing for the DNA replication, and the centrosomes undergoes replication.
The S phase of the cell cycle during interphase is responsible for the synthesis of DNA. In this phase, the genetic material of the cell is doubled before it enters mitosis or meiosis.
Answer:
S phase
Explanation:
What is empirical evidence? O A. Evidence presented as scientific but not gathered through reliable
scientific methods
O B. Evidence based on personal beliefs or preferences
O C. Evidence gathered through observation and experimentation
O D. Evidence that supports a scientific hypothesis
Answers
Answer:
The correct option is C) Evidence gathered through observation and experimentation.
Explanation:
In scientific researches, empirical evidence can be best described as the information which is acquired by observations and by performing various experiments. Empirical evidence is applicable in many disciplines. The empirical evidence plays a major role in supporting or disapproving a hypothesis. Scientists record and analyze the empirical information. A hypothesis is only supported when there is sufficient empirical evidence present to prove it true. Hence, the correct option is C.
An unbalanced force would cause a ball to: A. Slow down and eventually come to a stop
B. Stay motionless until an additional force acts.
C. Change the magnitude and/or the direction of its velocity.
D. Begin to move in uniform circular motion.
Answers
Answer:
C
Explanation:
What is a concern for biodiversity related to increasing greenhouse gas concentrations in
the atmosphere?
Answers
Answer:
Biodiversity is adversely affected to the increase in the concentration of greenhouse gas in the atmosphere. Greenhouse gas such as carbondioxode which is emitted from vehicles goes up into the atmosphere and form a layer. This greenhouse gas is responsible for increasing the temperature of the earth. When the temperature rises the habitat of many animals is not suitable for their living and the biodiversity is negatively affected.
Compare the productivity of terrestrial and aquatic ecosystems against the percent of Earth's surface area they occupy.
Answers
Answer:
go to https://quizlet.com/85711891/notes-flash-cards/
to get your answer it has the one you are looking for i didnt want to copy it tho
Explanation:
Answer:
The 6 terrestrial ecosystems are tundra, taiga, temperate deciduous forest, tropical rain forest, grassland, and desert, these are distinguished from aquatic ecosystem by the limited supply of water.
Explanation:
please mark brainliest
What is a molecular clock
Answers
Answer:
The molecular clock is figurative term for a technique that uses the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged. The biomolecular data used for such calculations are usually nucleotide sequences for DNA or amino acid sequences for proteins.
Explanation:
Hope this help
plz mark brainliest
Have a nice day!!!
A molecular clock is something that measures an amount of changes or mutations, which happen in the gene sequences of different species periods of time.
Select the correct answer. Which of the following is the major vessel that carries deoxygenated blood from the heart to the lungs?
A.
Pulmonary Artery
B.
Pulmonary Vein
C.
Inferior Vena Cava
D.
Aorta
Answers
Answer: The correct answer is option (A) i. e. pulmonary Artery.
Explanation:
Pulmonary Artery is a major vessel that carries deoxygenated blood from the heart to the lungs. It is the only artery which carries deoxygenated blood from heart to the lungs. Except pulmonary Artery all other arteries in the human body carries oxygenated blood from heart to all cells.
Answer:
A. Pulmonary Artery
Oxygen is needed for this process to occur
Answers
Answer:(We breathe because oxygen is needed to burn the fuel [sugars and fatty acids] in our cells to produce energy.) What happens in the process of respiration? ... (The energy station of the cells, called mitochondria, process oxygen to power the cells. As part of the combustion process, carbon dioxide is released.)hope it helped in someway ig idk
Explanation:
Answer:
We need it to breath!!
Explanation:
How does global warming affect the temperate deciduous forest
Answers
Answer:
it changes the environment
Explanation:
it effects the environment and everything about it
Which like forms would have been among the first organisms on earth
Answers
Bacteria have been the very first organisms to live on Earth
What are brownfields
Answers
The lands which are lef unuse after it is affected by environmental contamination.
Explanation:
- Brownfields are abandoned or unused fields where reuse is hindered by real or observed environmental contamination. The places may include localities destroyed by hazardous materials, petroleum or mine-scarred land.
- Brownfields are found in a city or town's manufacturing section, on areas with discontinued factories or industrial buildings, or other earlier contaminating operations like steel millhouses, refineries or landfills. It is mainly found in urban cities where there is normally a stronger potential to redevelop these localities.
- Some of the most frequent contaminants known at Brownfield sites are from fuels such as grease, propellant, diesel and kerosene from subterrene storage tanks, floor drains, External storage of barrels and machine, and cleaning solvents.
Bb where B=Brown eyes and b=green eyes. What is the Genotype and what is the phenotype in this situation?
Answers
Answer:
heterozygous
Explanation: