Which of the following is always an important part of an experiment?
1.making a working model
2.observing things in nature
3.making drawings of things observed
4.identifying and controlling variables
The most important part of an experiment would be; identifying and controlling variables.
In order to set up an experiment, you need to test the specimen(s) with and without a curtain variable. That is what makes an experiment a test.
Answer:
identify and controlling variables
Explanation:
lack of awareness of control variables can lead to faulty result or what are called "confounding variables" additionally, noting control variables makes it easier to reproduce and experiment and establish the relationship between the independent and the dependent variable
what occurs during transcription
Answer: Transcription uses DNA as a template to make RNA molecule and then RNA then leaves the nucleus and goes to a ribosome in the cytoplasm.
Explanation:
PLEASE HEP ME WITH THESE QUESTIONS. 1.(Solar system, Galaxy): the Sun, the planets, and other celestial bodies that are held by the
Sun’s gravitational attraction.
2. (Black hole, Eclipse): a partial blocking of light from the passage of an object between the
celestial body and the observer or between the celestial body and its source of illumination.
3. (Equator, Axis): an imaginary line through Earth that extends from the North Pole to the South
Pole.
4. (Cyclic pattern, Sporadic pattern): an event or process that contains multiple steps that repeat.
5. (Climate, Seasons): the four divisions of the year based on changes in temperature caused by
varied amounts of sunlight and the tilt of Earth.
Answer:
1. solar system
The galaxy is much larger than the solar system, and since the question only includes the sun and the other planets, and what's close to that like debris, we should limit this to the solar system.2. eclipse
A black hole is a discontinuity from which light cannot escape. It's by no means partial or temporary, unlike an eclipse, which is when a celestial body covers another (like when the moon temporarily covers the sun).3. axis
The equator is like the circumference of the sphere, and the axis is like a diameter that goes straight through the earth. The axis goes from pole to pole, which is through the earth, so you know it's the correct answer.4. cyclic pattern
"Cyclic" comes from "cycle" which means a consistent pattern. "Sporadic" means with no pattern, capricious.5. seasons
There are four seasons and there aren't four climates, so this should be fairly simple!Often overlooked, what is the importance of decomposers and detritivores (organisms that eat left overs, not scavengers) in a balanced
ecosystem?
A. They are the largest group at the bottom of an energy pyramid.
B. They are a keystone species in passing the nutrients through the food chain.
C. They help break down dead organic matter and return nutrients to the soil.
D. They can survive without oxygen and thus continue under extreme conditions.
Answer:
C. They help break down dead organic matter and return nutrients to the soil.
Explanation:
Decomposers are organisms that break down other dead organisms. They also return nutrients to the soil.
a cell with a diploid number of 24 undergoes meiosis, how many chromosomes are in each daughter cell?
Answer:
it will have 12
you are welcome :)
When a cell with a diploid number of 24 undergoes meiosis, each daughter cell will have 12 chromosomes.
What is meiosis?Meiosis is a process of cell division that generates haploid cells having half the number of chromosomes as the cell. It plays a role in reproduction by enabling the merging of two haploid cells to form a diploid cell with the complete set of chromosomes.
In this scenario the parent cell contains 24 chromosomes resulting in each daughter cell possessing 12 chromosomes.
Learn about meiosis here https://brainly.com/question/25995456
#SPJ6
In wild populations, evolution is often causedby natural selection. Based on what you have observed, how does natural selection occur?
Answer:
In natural selection, genetic mutations that are beneficial to an individual's survival are passed on through reproduction. This results in a new generation of organisms that are more likely to survive to reproduce. ... Those differences are at least in part determined by their genes.
Explanation:
hope that helps!
Pls help Choose the answer that has the terms in order, from the smallest
grouping to the largest grouping.
a. population, community, ecosystem
b. ecosystem, community, population
c. community, ecosystem, population
d. ecosystem, population, community
What are the impacts or the after-effects of global warming
Which city on the map shown below is next to be hit by a cold front? I’m not sure if it is Buffalo or Utica...
I will mark as brainliest!
Why Do You Think Soil Erosion Increased Over Time ?
A solid exerts a force of 500 N. Calculate the pressure exerted to the surface
where area of contact is 2000 cm2
Answer:
2500 pa
btw this is physics ;)
One global warming prediction might be
A) fewer climatic weather change events
B) increased cases of malaria
C) increased resources and plant growth periods
D) lower overall coastal flooding events
E) none of the above
Answer:
E- None of the above
Explanation:
None of those things are signs of global warming.
P.S - Check my answer first I am not 100 percent sure my answer is right but it is my best guess.
Answer:
E) none of the above
Explanation:
Although implied, nowhere in the lesson does it talk about INCREASED malaria cases nor increased growth PERIODS of resources and plants.
what evidence proves endosymbiosis happened
Answer:
Explanation:
The first piece of evidence that needed to be found to support the endosymbiotic hypothesis was whether or not mitochondria and chloroplasts have their own DNA and if this DNA is similar to bacterial DNA. This was later proven to be true for DNA, RNA, ribosomes, chlorophyll (for chloroplasts), and protein synthesis.
Plzzz Answer all
25 PTS. IF ANSWERED
what is a compression in physical science
Answer:
A compression is a region in a longitudinal wave where the particles are closest together. ... The region where the medium is compressed is known as a compression and the region where the medium is spread out is known as a rarefaction.
Explanation:
Why are ecosystems important for humans?
Answer:
Ecosystems are important because they help humans to get pure oxygen from the trees and plants. Also, clothes, paper, and many more items are made from ecosystems. Also, humans are part of the ecosystems.
3. Antibodies fight infections by
(a) eating microbes before they can attack cells.
(b) binding to antigens and rendering them inactive or harmless.
(c) injectiſg cells with a harmless form of an otherwise harmful virus.
(d) creating white blood cells.
4. Immunity occurs when the system recognizes a foreign substance and
Answer:
a) eating microbes before they can attack cells
Explanation:
Antibodies fight infections bu eating microbes before they can attack cells
Which disease can destroy red blood cells? Which disease infects T cells? Which disease produces a scaly, stinging, and itchy rash on the feet? giving brainliest to first right answer
Answer:
Autoimmune Hemolytic Anemia (AIHA)
AIDS & chromosomal breakage syndromes
Athlete's foot. Chickenpox or shingles
Explanation:
Autoimmune Hemolytic Anemia (AIHA) disease affects the blood. It leads to production of substances that destroy the red blood cells (RBCs) and hence leads to anemia (low hemoglobin).
Some of the diseases that affects the T cells are acquired such as immune deficiency (AIDs) and chromosomal breakage syndromes (CBSs) while some are inherited from parents such as DiGeorge syndrome, chromosomal breakage syndromes etc.
Athlete's foot. Chickenpox or shingles produces rashes on feets
is water a living, non living, or dead
Answer:
non living
Explanation:
If the DNA sequence is TGC ACG TAC, then the mRNA sequence is:
A.) ACG UGC AUG.
B.) ACG TGC ATG.
C.) AGC UCG AUC.
D.) AGC AGC ATG.
Answer:
A.) ACG UGC AUG. The answer is A
Explanation:
What is used to direct protein synthesis in the cell?
sequences of nitrogenous bases in the cell’s DNA
phospholipid molecules in the cell membrane
protein transport molecules in the cell’s ribosomes
electron transport chains in the cell’s mitochondria
Answer:
sequences of nitrogenous bases in the cell's DNA
How does Matter move throughout the ecosystem
Answer:
In ecosystems, matter and energy are transferred from one form to another. ... Nutrients and living matter are passed from producers to consumers, then broken down by decomposers.
Explanation:
Logging involves people cutting down trees to acquire timber for uses such as building homes and making paper. How would logging affect a pine forest ecosystem? Choose the two that apply.
A. It would remove all the soil from the area.
B. It would change the plant populations in the area.
C. It would remove all the populations from the area.
D. It would change the animal populations in the area.
Answer:
Explanation:
Pues cambiaría la población de animales y en el área espero que esté bien la pregunta
B. It would change the plant populations in the area.
D. It would change the animal populations in the area.
Logging can have significant impacts on a pine forest ecosystem.
What is the effect of removing sunlight ?Removing trees can change the amount of sunlight reaching the forest floor, altering the growth patterns and composition of the plant populations.
Clear-cutting can also remove critical habitats for animals, leading to changes in the animal populations in the area. However, logging typically does not remove all the soil from the area, and it does not necessarily remove all the populations from the area, as some plants and animals may still be able to survive in the disturbed ecosystem.
Logging is the practice of cutting down trees to obtain timber for commercial purposes, such as building materials, paper products, and furniture. It is a widespread industry that can have significant environmental and economic impacts.
Learn more about logging at :
https://brainly.com/question/17202142
#SPJ3
Bacteriophages are viruses that attack and destory
Answer:
Bacteria
Explanation:
They are harmless to humans but murder billions and billions of bacteria everyday! There's also 10^31 bacteriophages on Earth, more than every other organism on Earth, including bacteria, combined so they are pretty abundant killers of bacteria.
Which of the following statements about the skeletal system is false
Answer:
C is False..
Hope this helps..
Explanation:
The human skeleton is the internal framework of the human body. It is composed of around 270 bones at birth – this total decreases to around 206 bones by adulthood after some bones get fused together. The bone mass in the skeleton reaches maximum density around age 21.
True or False - Velcro was an invention that was originally used for space missions that is now used for things on Earth.
True
False
Answer:
True
Explanation:
Velcro was coined from the combination of the words “velvet” and “crochet.” It is made up of two strips of fabric in which one is covered in thousands of tiny hooks and the other with thousands of tiny loops. It was discovered by George de Mestral.
A cell type without a nucleus
Prokaryote is the type of cell
Answer:
Prokaryote
Explanation:
Prokaryotes do not have nucleuses
Hich cell types are low in aplastic anemia? select all that apply. leukocytes hepatocytes erythrocytes thrombocytes osteocyte
Answer:
Erythrocytes, leukocytes and thrombocytes
Explanation:
Aplastic anemia is a type of rare condition in which the body stops producing enough new blood cells. This might occur as a result of damage to the stem cells in the bone marrow that produces these blood cells which includes the rest blood cell, the white blood cells and the platelets. The most common cause of this condition is the immune system attacking and damaging the stem cells in the bone marrow.
Flowering plants appeared
A.)Paleozoic
B.)Cenozoic
C.)Mesozoic
Answer:
B
Explanation:
thats just what it is
Which of the following is not produced by condensation? *
A. dew
B. smog
C. fog
D. clouds
Answer:
smog
Explanation:
dew,clouds and fog are produced by condensation while smog is a kind of air pollution