Answer:
species changing over time
Half-life definition
Answer:
The given amount of a radioactive substance to disintegrate.
Explanation:
HELP! I don't know the answer!!
Answer:
The first one I think yay
if anyone could give me the answers to these two please help
Answer:
the first one is increase and the second one is cell differentation
Explanation:
Why would a certain trait have a
lower fitness than another causing
that trait to die off in a certain
population?
A. The trait has been around too long to be useful.
B. The trait does not benefit or hinders the
organism.
C. The trait does not wish to be passed on.
Answer: B
Explanation: Traits usually die off when they are unneeded by the organism, or if the trait causes harm to the organism's survival. Through natural selection, over time, the organisms with the best combination of traits for its survival will become the dominating species, and those with weaker traits may not survive long enough to pass off their traits to future offspring.
(word bank)
acid precipitation results when___and____ compounds react with water in the atomsphere
Answer:
Sulfur; nitrogen.
Explanation:
Acid precipitation results when sulfur and nitrogen compounds react with water in the atmosphere.
This acid precipitation is also known as acid rain and it is typically caused by the chemical reaction between sulfur oxide and nitrogen oxide which are released into the air as a result of burning fossil fuels, with water and other chemical elements present in the atmosphere.
Generally, acid precipitation (acid rain) usually have a pH of about 5.1 or below and as such, it is very acidic nature i.e possessing a large amount of hydrogen ions.
Hence, acid precipitation (acid rain) when washed to the earth has negative or harmful effects on various living and non-living organisms such as animals, plants, cars, buildings etc.
Identify the type of mirror based on how the image is formed: A virtual
image appears to form behind the mirror. The image appears upright and
the same size as the object but left to right reversed.
*
concave mirror
convex mirror
plane mirror
sweat acts as a cooling agent on the body because of water high heat of vaporization or high specific heat capacity?
Explanation:
Large amounts of heat are needed to evaporate water, because H-bonds need to be broken. Sweating is an example of using water as d coolant. As the sweat evaporates it pulls heat away from the body. Application 'Water's thermal properties, its high specific heat, means that it can cool us.
PLEASE HELP ME 10 POINTS!DNA negatively charged
45 PTS What role do plants play in the water cycle?
precipitation
transpiration
condensation
cooling
Answer:
transpiration
Explanation:
plant play transpiration role in water cycle
Linnaeus used similarities in structure to determine relationships among organisms.
Please select the best answer from the choices provided
T
F
False fales gsgwiwiwbw
A basic understanding of which field of science, and its related technology, is essential for the both Kepler spacecraft and for Leeuwenhoek's discoveries of microorganisms and cells? A) botany B) zoology C) optics D) biology
Answer:
the anser is optics
Explanation:
i just did the test
what is difference between MYOCARDIAL INFRACTION and ANGINA PECTORIS ?
Explanation:
myocardial infraction is also known as heart attack and it is the blockage of blood flow to the heart muscles
while
angina pectoris is also known as ischemic chest pain and it is a type of chest pain caused by reduced blood flow into the heart
Scientists wondered how volcanoes could be located so far from tectonic plate boundaries until one proposed the idea of 1___________, where the magma is much hotter than surrounding magma. These 2________and do not move with tectonic plates. They are responsible for the creation of 3____________island chains.
HELP!!!
Answer:
1. Hotspots
2. Fixed
3. Volcanic
Explanation:
I think this is right
How are people connected to the circle of life?
In your own words, explain why the landscape of Florida has not changed over time like that of Colorado.
Answer:
The landscape of Florida has not changed over time like that of colorado because the rock structures of colorado are much older than that of florida. Colorado also experiences a lot of tectonic plate movement. This led to the colorado river flowing through it and through weathering and erosion the landscape changed. Florida is not affected by the same things so the landscapes change in different pace
The landscape of Florida has not changed over time like that of Colorado because Colorado is a frigid mountainous area while Florida has a humid subtropical climate.
What do you mean by Landscape?The landscape of an area may be defined as the representation or visible region of a defined area that is set up by artificial boundaries.
The region of Colorado experiences the movement of tectonic plates that changes the area of river flowing which leads to the activities like weathering and erosions.
While Florida experiences a hot and humid climate with stable conditions. Hence, the change in landscape is not rapidly seen in Florida.
Therefore, it is well described above.
To learn more about Change in Landscape, refer to the link:
https://brainly.com/question/211179
#SPJ2
Describe the pathway of C4 plants.
What term describes igneous rocks that cools and crystallizes inside the point
earth?
1. lava
2. intrusive
3. extrusive
4. Magma
Answer:
The correct answer would be B: Intrusive
Explanation:
I hope this helped!!
what are some negatives and some positives of coastal development?
Answer: Positive: Coastal areas help prevent erosion; filter pollutants; and provide food, shelter, breeding areas, and nursery grounds for a wide variety of organisms.
Negative: Added to this are impacts such as increased erosion due to coastal development, increased pollution, and increased boat traffic - all of which lead to further habitat loss and put increased pressure on marine species. ... Other coastal developments can also harm sensitive marine habitats and species.
Explanation:
Which statements are correct concerning human DNA? Select all that apply.
1. Each strand contains chromosomes from one parent.
2. It contains 23 chromosomes
3. It contains 46 chromosomes
4. Each chromosome contains 23 genes.
Answer:
answer would be B,C
17. Which organelles do all EUKARYOTIC CELLS have in common? (Select
ALL that apply.) *
nucleus
cytoplasm
cell membrane
Answer:
all of them
Explanation:
they all have them lol
If an organism has 20 chromosomes, how many did they inherit from each
parent? *
O 5
O 10
20
О
40
help asap!!!!!!! pls and thank u also i’ll mark brainliest
Answer:
9.5 times
saturn is exactly larger than the earth
Please help me!
Please answer correctly
Urgent !!!
Answer:
A= ovaries
B=uterus
C=endometrium
D= cervix
E=vagina
Answer:i:a ii:b iii:c iv:a
Explanation:this is pretty much what d id hope it helps
Why do we calculate calories per gram instead of just calories?
Because an amount of the said substance emits a specific amount of heat.
In food usually calories are measured per 100 grams.
For biomolecules calories are measured per 1g (e.g. 1g glucose=4.1kcal)
What primary method does the cell employ to ensure gene expression only occurs when necessary?
Limited amounts of specific DNA
Phosphorylation cascade with multiple steps
Receptors that only fit specific hormones
Unique transcription factors made of carbohydrates
Answer:
Unique transcription factors made of carbohydrates
Explanation:
Gene expression refers to the way by which the genes which contain hereditary materials in the cells are converted to certain proteins. Gene expression is regulated to avoid the wastage of useful energy. Transcription allows the copying of genetic information from the DNA to the RNA.
Transcription factors can activate or deactivate a gene thus hindering its expression. Unique transcription factors help to regulate gene expression.
Answer: receptors that only fit specific hormones
TYPES OF LEVERS
Name
Classify the following levers as first, second or third class.
Answer:
First class lever
Second class lever
Third class lever
First class lever
First class lever
Third class lever
Second class lever
Second class lever
Explanation:
A lever is one of the types of simple machine. It is used to rotate on a fixed point. Load, effort and fulcrum are the three important parts involved in the functioning of lever. In the first class lever, the fulcrum is situated in the middle of the load and the effort. In the second class lever, the load is situated in the middle of the fulcrum and effort. In the third class lo=ever, the effort is situated in the middle of the fulcrum and the load.
WOULD THERE BE ANY BACTERIA
IN AN AQUARIUM?
A balanced
aquarium
contains certain animals as
well as some plants. How
many kinds of animals can
you make out in the
aquarium shown here ? Name
any two such animals.
.............
...............
Do you think there would be
some bacteria in it? If so, in
which part of the aquarium
would they be occurring in
abundance and what for?
.................
Answer: yes, many different kinds
Explanation: bacteria are everywhere and so will be found in aquaria. Aquarium health is dependent on bacteria. Fish excrete ammonia which is toxic. Bacteria such as Nitrosomonas and Nitrococcus convert ammonia to nitrite, and Nitrobacter converts nitrite to nitrate which is relatively harmless. Bacteria such as Pseudomonas stutzeri and Bacillus subtilis remove nitrate and organic waste. There are also bacteria in fish intestines, and other bacteria that can cause fish diseases or create undesirable conditions such as Pseudomonas fluorescens, Vibrio, Flexibacter or Aeromonas and anaerobes that reduce sulphates to hydrogen sulphide.
Describe where a baby plant gets its energy to begin growing.
from stored energy and food from the cotyledons until it reaches sunlight
what do we call it when water washes dirt away from a hillside?
A. Soil
B farming
C. Erosion
D. Volcano
Answer:
c. erosion
Explanation:
trust me and give brainliest
Which of the following farming activities is MOST helpful to the environment?
A) rotating crops to reduce soil loss
B) clearing land to grow more crops
C) damming a river to provide water for crops ,
D) spraying crops with pesticides
Answer:
A) rotating crops to reduce soil loss