Answer:
Sun exposure.
Free radicals. ...
Smoking cigarettes. ...
Irritants. ...
Smiles and frowns
Explanation:
HELP ME WITH THESE TWO QUESTIONS
Question One:
Some steps in cell division are shown below:
1. Chromosomes condense and pair up
2. Segments of DNA of sister chromatids twist and cross
3. Exchange of DNA occurs between chromosomes
4. Four daughter cells are created that are haploid
Which of the following steps is least likely to occur during meiosis 1?
Step 1
Step 2
Step 3
Step 4
Questions Two:
A few characteristics of a type of reproduction are shown below:
1. Occurs in all body cells
2. Two daughter cells are formed
3. Chromosomes arrange equally on either side of the equator
4. The daughter nuclei each have half the number of chromosomes as that of parent cells
5. Is necessary for sexual reproduction
Which of the above are characteristics of meiosis?
1, 2, and 3
1, 4, and 5
2, 3, and 4
3, 4, and 5
Answer:
The first one is A and the second one is B
You have a nice day now ✊
HOW DOES STRESS AFFECT YOUR FOCUS???
Hint: The shallower our breath, the less oxygen that reaches our brain, and the harder it is to focus.
1: When you are stressed you start breathing more deeply and makes it harder to focus.
2: When you are stressed more oxygen gets to your brain and makes it harder to focus.
3. When you are stressed you start breathing more deeply and that delivers more oxygen to your brain helps you focus.
4. none of these
Answer:
Ironically, stress does improve concentration for a very short period of time. This is due to the body releasing chemicals into the brain to help it focus and pushing adrenaline into the bloodstream in order to heighten the senses, which helps the body hone in and focus on tasks at hand.
Explanation:
3.
What are the substances?
Explanation:
Healthy human lungs look pink and spongy from the outside. The left lung is a little smaller than the right lung to make room for the heart. The lungs and heart are both protected by the rib cage. In the lungs, each main bronchus branches off into many smaller bronchi. The bronchi become smaller and smaller, and the smallest bronchi are called bronchioles. There are about 30,000 bronchioles in each lung, each about the same thickness as a strand of hair. The inhaled air eventually ends up in tiny air sacs called alveoli at the end of each bronchiole. There are about 300 million alveoli in each lung. They are covered with capillaries, tiny blood vessels that are only one cell thick. Oxygen travels from the alveoli through the capillaries to the bloodstream, heart and other cells.
Which of these best represents the progression of bronchi, bronchioles and alveoli in the lungs?
A
tree trunks that become smaller branches and twigs
B
a tight flower bud that has opened into a full bloom
C
whole apples that are sliced into separate wedges
D
a bridge that crosses two rivers
HELP IF U CAN !!! if u can’t see the pic don’t answer !!
Hi I need help in those two questions please don't type something that doesn't make sense for the points and have a good day
Answer:
enterocytes, Paneth cells, goblet cells, and neuroendocrine cells / Gastroesophageal Reflux Disease / Antacids, Histamine blockers, Proton pump inhibitors, and Prokinetic agents. / from the mouth to the anus / yes, the liver
one pore cell, one duct cell, one canal cell, and a fused pair of gland cells / Uremia / renal replacement therapy by hemodialysis, peritoneal dialysis, or kidney transplantation / kidneys and bladder / yes, the kidney
cilia cells, goblet cells, and basal cells / Asthma / Antileukotrienes or leukotriene modifiers, Cromolyn sodium, Inhaled corticosteroids, Long-acting inhaled beta2-agonists, Methylxanthines, Oral corticosteroids, and Immunomodulators / starts at the nose and mouth and continues through the airways and the lungs / yes, the lungs
Explanation:
how does the rock cycle support the explanation that "matter is never created or destroyed?"
Answer:
The chemical elements that make up minerals and rocks are not destroyed. This fact illustrates the principle of conservation of matter. The changes that take place in the rock cycle never destroy or create matter. The elements are just redistributed in other forms.
Explanation:
.
Explain at least one way in which the quantity and quality of water resources have been affected by human population growth. Predict how you think the water supply will be affected by continued human population growth. Support your response with appropriate evidence and scientific reasoning.
Which image shows water being used in industry?
Grass being watered by a sprinkler.
Water spraying over machinery.
Water being used to wash dishes.
Why are index fossils useful for determining the age of other fossils or rock layers?
Answer:
yes
Explanation:
I will give brainly to correct answer and if you dont get brainly lmk if you want me to make a fr33 p01nts questions so you get brainly
Why is it necessary for organisms to undergo the process of respiration?
Respiration helps organisms capture vitamins from sunlight.
Respiration creates energy that is used for growth and repair.
Respiration limits organisms’ losses of water and oxygen.
Respiration constructs proteins needed for life’s functions.
True/False: Plant Viruses can only infect plant cells
Answer:
true
Explanation:
What is the answer to number 2??
Answer:
Animalia
Fungi
Protista
I hope this helps <3
i will give brainlst if the answer is right
Which of the following is a renewable resource?
Question 3 options:
natural gas
uranium
biomass
coal
Answer:
coal because you can use it for fire a lot so you won't get cold and you can make torches to keep it bright.
Answer:
Biomass, this is what I remember learning.
How does adaptation help an organism?
1 point
It helps the organism change colors
It improves its ability to survive and reproduce
It improves its ability to change species
It helps the organism become a fossil
If one animal or plant has the same characteristics as another, they may both be part of the same...
1 point
Evolution
Planet
Species
Fossil
Where do scientists look for evidence of evolution? *
1 point
In the layers of the Earth
In caves
In water
In old books
What is a fossil? *
1 point
A layer of sediment
A living organism
A very old organism
Remains of a once-living organism
The fossil record provides evidence about *
1 point
The age of rocks
The order in which species have existed
The number of layer the Earth has
The composition of minerals
All living things inherit similar traits from their
1 point
Ancestors
Evolution
Fossils
Descendants
If you compared two kinds of living organisms, what might you learn about their history? *
1 point
How long ago they evolved
Whether they share a common ancestor
Whether they live in the smae place
Whether they can mate and reproduce
What do organisms inherit from their ancestors? *
1 point
Mammal characteristics
Traits and DNA
Hind limbs
New traits
What does the similarity between humans, dolphins, cats and bats indicate? *
1 point
They all evolved recently
That their ancestors lived in the same place
They share a common ancestor
That they are becoming more alike
Fossils provide evidence that Antarctica was once located *
1 point
At the North Pole
Near the equator
At the South Pole
Where it is now
What does natural selection explain about a population of organisms *
1 point
How long it has been since it evolved
How it changes in response to its environment
How it resists change
How likely its members are to leave fossils
Which individuals in a population are most likely to survive and reproduce? *
1 point
The largest ones
The ones with the most DNA
The best adapted ones
Answer:
Here is a general idea on "How does adaptation help an organism"
Explanation:
When they adapt, they are able to survive in that kind of climate better, if they didn't, then they would die. especially in habitats they have never been in
genetically different cells produced in mitosis, meiosis, or both
Answer:
Meiosis
Explanation:
Mitosis is the splitting of cells giving two genetically identical daughter cells. Meiosis is the splitting of cells resulting in four unique daughter cells as they have half the dna.
Answer:
Meiosis
Explanation:
Mitosis is the splitting of cells giving two genetically identical daughter cells. Meiosis is the splitting of cells resulting in four unique daughter cells as they have half the dna.
are somatic cells in mitosis, meiosis, or both
Answer:
both
Explanation:
GIVING BRAINLIEST PLEASE HELP :')
A musk ox and the Alstroemeria flower have physical structures and organs that have similar functions. Provide two examples of similar structures or organs and describe how they have similar functions.
How can plate tectonics contribute to evolution?
A.) separating plates can divide groups of a population
B.) radiation from plate tectonics can cause genetic change
C.) volcanic eruptions can cause species to become extinct
D.) The movement of plates forces some animals underground
Answer:
C.
Explanation:
What is the problem with using common names in classification?
A general phobia with unfamiliar latinized scientific nomenclature has proliferated the use of common or trivial names. These names, however, can vary with geographic region, language, or individual preference often and thus, can lead to misidentification or a delay in the proper identification of a toxic plant.
Answer:
The only problem of using common names is that we cannot deduce the features of a particular organism just by looking at its name.
Explanation:
The only problem of utilizing basic names is that we can't find the highlights of a specific organic entity just by seeing its name.
Which of the following units are in order from smallest to largest?
a) Epoch, period, era.
b) Era, epoch, period.
c) Period, era, epoch.
d) Epoch, era, period.
NO LINKS
Drag each label to the correct location on the image. Not all labels will be used.
Match the labels with the symbols on the weather map.
don’t answer if u can’t see the pic. HURRRYYY PLSSSS !!!!
Answer:
I think its c because they aren't radiating or splitting. It seems the most reasonable.
Please answer I need help
1. A hurricane draws its energy from the cold, dry air near the ocean's surface. true or false
2. when a hurricane passes over land, it loses its energy source
true or false
Do you mind to help me plzzz?
What are advantages and disadvantages of sexual reproduction?
Write an essay pretending to be an Ecologist studying the Green Sea Turtle. As an ecologist what is important for you to study? What is the habitat of your animal? Is the animal an endangered species? Can the species be saved? If it is being saved how is the species being saved?
What is the goal of Meiosis 1?
Answer:
In meiosis I, chromosomes in a diploid cell resegregate, producing four haploid daughter cells
Answer:
Meiosis I is the reduction division, and meiosis II is more similar to mitosis in that the sister chromatids are separated. The goal of meiosis I is to separate homologous chromosomes. The goal of meiosis II is to separate sister chromatids. In meiosis II, no DNA is duplicated as in prophase I of meiosis I.
Explanation:
Why do roots always grow in a downward direction, no matter which way you turn the seed or seedling?
because roots weigh more than any other plant part
because the plant’s stem begins to grow, and it pushes the roots downward
because that is the direction that roots find necessary water and nutrients
because the root contains hormones that make it grow away from the sun
Please help I don't understand
Answer:
Im pretty sure its C. Hopefully.
Explanation: