I need help I don't understand
What causes scientists to disagree?
O A. Some scientists are better than others.
B. They have unique perspectives and skills.
C. Scientists disagree to get attention.
O D. Many scientists do not use the scientific process.
Answer:
B. They have unique perspectives and skills.
Which stage in the life cycle of a plant is represented in this picture?
a
Adult plant
b
Seed
c
Seedling
d
Sprout
Answer:
D) Sprout
Explanation:
How is a nerve impulse generated when most sensory receptors are activated?.
Answer:
The trigeminal nerve is the part of the nervous system responsible for sending pain, touch and temperature sensations from your face to your brain. It is a large, three-part nerve in your head that provides sensation.One section called the mandibular nerve involves motor function to help you chew and swallow.Explanation:
For which of these reasons is the word expedite a verb?
O A. It can easily be pictured.
O B. It ends in -ite.
O C. It can be broken down into three parts.
O D. It has no antonyms.
Help
Answer:
answer is d
Explanation:
I just guest that hope it's correct
Answer: It ends in -ite.
The study of embryological similarities and differences among species is called _______.
Comparative embroyology
explanation:
Comparative embroyology is the study of the similarities and the difference.
When using a high magnification lens, how can you bring the object you are viewing into sharper focus?Question 2 options:
adjusting the diaphragm
use the coarse adjustment knob
moving the stage clips
use the fine adjustment knob
Answer:
Use the fine adjustment knob
Sea urchins tend to have great camouflage because they sometimes carry what two animals on there shells?
Sea urchins tend to have great camouflage because they sometimes carry algae and rocks on their shells.
What is camouflage?Camouflage is a defense mechanism used by certain organisms to avoid predation or surprisingly attack their prey.
Different animals possess different camouflage mechanisms. For example;
Chameleons change their color to that of their immediate environmentCertain snakes hide in vegetations that blend with their skin color.However, sea urchins are aquatic animals that tend to have great camouflage because they sometimes carry algae and rocks on their shells.
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I got two wrong one has to switch the, the other one
Combustion - the burning of fuels and harmful gases in the atmosphere through factories.
decomposition - when skulls and bones are decomposed to give out carbon dioxide.
diffusion - when the the molecules move from a region of higher concentration to a region of lower concentration.
respiration - when person breathes in oxygen and out carbon dioxide.
photosynthesis - is the process where trees make glucose and oxygen with the help of sunlight and mineral and water from soils.
S
11. Evaluate how a person's blood calcium levels
would be affected if his or her thyroid gland
stopped working.
our thyroid glands plays a main role in a human body. It secretes thyroxine and calcitonin. In which thyroxine help in growth and cellular metabolism and calcitonin helps to regulates calcium concentration in blood . If thyroid gland stops working then there is low level of calcium in our blood, which leads to mental and hormonal disorder. In this way a person's blood calcium level would be affected if his/her thyroid gland stops working.
Select all of the following statements that describe the structure of a molecule of DNA
The statements that describe the structure of a molecule of DNA include the following:
Twisted double helixContains deoxyribose sugarContains the nitrogenous bases, adenine, thymine, cytosine and guanine.What is DNA?This is known as deoxyribonucleic acid and carries genetic instructions in all living things.
It is a twisted double helix with a deoxyribose sugar and the nitrogenous bases such as adenine, thymine, cytosine and guanine.
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Are there any countries where men life longer than women
Which system of the body would be most directly affected if excess cholesterol led to plaque deposits in arteries?
circulatory system
immune system
endocrine system
respiratory system
Answer:
endocrine system
Explanation:
it would stop circulating hormones through they system
The FBI agents are called "Hoovers," a reference to legendary top-G-man be
Edgar Hoover, but also a clever reference to a vacuum cleaner brand. There
are numerous shots of vacuums being used to gather hair, dead skin cells,
and nails. Why are these materials being collected?
To extract DNA and use DNA fingerprinting to identify who was at
the scene of a crime.
0 To clean up the crime scene because it was really dirty.
To view the specimen under a microscope to determine who was at
the scene of a crime.
O To extract proteins and use protein fingerprinting to identify who was
at the scene of a crime.
We can confirm that the materials being collected at the crime scene are used to extract DNA and use DNA fingerprinting to identify who was at the scene of the crime.
How does DNA help identify suspects?This is due to the fact that the DNA of each individual is unique. Meaning that as long as the FBI has a database to compare it to, they can quickly identify whose DNA it is and confirm their presence at the crime scene.
Therefore, we can confirm that materials being collected at the crime scene are used to extract DNA and use DNA fingerprinting to identify who was at the scene of the crime.
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Which is not an impact on ecosystems during a drought?
A. Declines in surface water
B. Land subsidence
C. Increased organism population
D. Seawater intrusion
Answer:
c
it is because during drought there will be less water around us.so the no of animals decrease .
label the parts of cells using words from the word bank?
1. organelles
2. membrane
3. cytoplasm
4. nucleus
biologydictionarynet
Name the cell that contains lots of chloroplasts for photosynthesis
Answer:
parenchyma cells of the leaf mesophyll
Explanation:
Answer:
Palisade cells have the most chloroplasts per cell, making them the major site of photosynthesis in the leaves of plants with them, turning light energy into chemical energy in the form of carbohydrates.
Explanation:
Humans use more fresh water for ________ than for any other purpose.
Answer:
hello.
The answer is “irrigating crops”.
Answer:
Agriculture
Explanation:
Humans use more freshwater for irrigating crops than for any other purpose.
An earthquake causes a new canyon to form. The canyon separates two populations of snakes. After many years, the canyon fills in, and the two populations come back together. If they can still interbreed, then __________.
Select one:
a.
evolution has occurred
b.
evolution has not occurred
c.
evolution will occur when the offspring are born
d.
evolution will never occur
Answer:
B. Evolution has no occurred
Explanation:
The change in genetics would prohibit the two populations from interbreeding.
EX. Take humans and apes, we are generally the same species however we cannot successfully interbreed.
The ______ are a series of fibrous connective tissue membranes covering the central nervous system.
Answer:
meninges
Explanation:
How is it that some people have different DNA than others? What exactly about the DNA is different?
Answer:
Although DNA is univeral, people have different DNA from each other mainly because of mutations, which change our sequences (the order of the nucleotides)
Explanation:
Question 4 of 10
What is the name of the planet next to the label A?
Solar System
EARTH
SUN
O A. Venus
B. Mars
Ο Ο Ο Ο
C. Saturn
OD. Mercury
What are the horticultural advantages of producing plants by cuttings rather than from seeds? Can you think of any disadvantages?
.Propagating a plant by cuttings will allow you to keep the special characteristics of that plant. Plants grown from seed will often be different from the parent plant and from each other. Propagating a new plant via cuttings avoids the difficulties of propagating by seed.
Disadvantages of propagating stem cuttings are: You will get a lack of genetic diversity and you may potentially increase Insect and Disease weakness in the new plant.
why was soil in wheat farms so much more vulnerable to erosion?
Explanation: The potential soil erosion increases if the soil has no or very little vegetative cover of plants/grass and/or crop residues. Plant and residue cover protects the soil from rain impact and splashes from it. It tends to slow down the movement of runoff water and allows excess surface water to infiltrate.
I hope this helps you! Have a nice day or night!!
Which of the following will increase the reaction rate of an enzyme reaction?
Decreasing the amount of enzyme while leaving the product amount unchanged
Decreasing the amount of product while leaving the enzyme amount unchanged
Increasing the amount of enzyme while leaving the substrate amount unchanged
Increasing the amount of substrate while leaving the enzyme amount unchanged
Answer:
Increasing the amount of enzyme while leaving the substrate amount unchanged
Explanation:
The general term that refers to the sum total of all chemical reactions occurring in cells to obtain, release, and use energy is:.
1. Angiotensin II triggers the __________ of the intraglomerular mesangial cells, which results in a(an) __________ of the filtration surface area.
Angiotensin II triggers the contraction of the intraglomerular mesangial cells, which results in a decrease in the filtration surface area.
What is Angiotensin II?Angiotensin II is a peptide hormone capable of narrowing the blood vessels, which is fundamental in many physiological processes.
Angiotensin II is also fundamental for retaining sodium and water in the body and activating the secretion of aldosterone.
This peptide hormone (Angiotensin II) is secreted by various cells types, especially in the liver, in different body tissues.
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The process in which a gas turns back into a liquid is called __________. What word completes the sentencA helium balloon's temperature is raised by 1°C. Will this cause its molecules to move faster or slower?e?
Answer:
the process is called condensation.
the molecules will move faster
Select all the correct answers. which two examples may be converted into fossil fuel after being buried under pressure for a long period of time? used cans plants animal waste electronic waste chemicals
Fossil fuel is carbon containing material formed by underground remains of dead plants and animals, including human extract and can be burned as fuels.
What is the procedure of changing fossils into fuel?These fuels are found in earth's crust and contains carbon that burns to produce energy. Its examples can include coal, petroleum, oil, etc.
These fuels are created when the buried plants and animals are subjected to intense heat and pressure. It contains carbon and hydrogen, which burns to produce energy.
Thus, here plants and animal waste can be converted into fossils fuels, while electronic waste and used cans cannot.
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Natural killer (NK) cells ________. A) are also called cytotoxic T cells B) are a type of phagocyte C) are cells of the adaptive immune system D) can kill cancer cells before the immune system is activated
Natural killer (NK) cells are also called cytotoxic T cells (Option A).
What are NK cells?The NK (Natural killer) cells are cytotoxic lymphocytes that trigger responses from the innate immune system.
Natural killer cells are one of the most important types of lymphocytes (white blood cells) in human cells.
These cells have cytotoxic properties because they produce cytotoxic granules and different cytokines.
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