Which example best describes life in the Paleozoic Era?
O A. marine organisms are dominant; small organisms begin to move onto land
OB. first flowering plants appear on land; dinosaurs roam the Earth
OC flowering plants are the dominant plant life; humans convert open spaces to farm land
OD. only bacteria and algae are alive; Earth's atmosphere had very little oxygen
Answers
Answer:
your answer is A .. well I'm pretty sure it is..
Related Questions
What do organisms use most of this energy for?
a) so they can continue to digest food
b) so they can continue to move around
c) so they can continue to breathe
d) so they can grow repair and reproduce
e) all of the above
Answers
Answer:
E
Explanation:
They need energy to do all these necessary feats.
What conclusion about Japan's farmland can be made by studying the map?
A)
Japan is dominated by wasteland.
B)
Tea is grown in all parts of Japan.
C)
Most of Japan's farm land is devoted to rice.
D)
Wheat and oats are the dominate crops in Japan.
Answers
what are the two main gases in the earth's atmosphere today?
Answers
nitrogen and oxygen r the main gases in the earths surface of atmosphere today in common
Answer:
n & O
Explanation:
nitrogen and oxygen
plz help it is really important
Answers
Answer:
answer one: during the day the sun's energy heats up land faster which makes the air above warmer
Explanation:
hope this helps!
Match the following terms with the correct definition. Arterioles Arteries Capillaries Venules Veins Small vessels that carry blood away from the heart to the capillaries are __________. Muscular-walled vessels that carry blood away from the heart are _______. One-cell-thick microscopic vessels that function to exchange nutrients and wastes are _________. Small vessels that connect to the capillaries that carry blood back to the heart are ________. Vessels that carry blood back to the heart are _________.
Answers
Answer:
Small vessels that carry blood away from the heart to the capillaries are Arterioles. Muscular-walled vessels that carry blood away from the heart are Arteries. One-cell-thick microscopic vessels that function to exchange nutrients and wastes are Capillaries. Small vessels that connect to the capillaries that carry blood back to the heart are Venules. Vessels that carry blood back to the heart are Veins.
Explanation:
We have different types of vessels in our bodies. We can divide them by their size and structure. Starting from the ones that carry blood away from the heath, we have the arteries. Arteries are vessels of big diameter that have muscle around them. Then, the arteries branch into arterioles, which have a smaller diameter. The arterioles branch into capillaries. These are small vessels with thin walls that allow the exchange of nutrients, wastes, and gases with the neighboring tissues. Once that the blood flows through the capillaries, it goes to the venules, which are small veins that will carry the blood to the veins and these to the heart. The veins do not have muscles in their structures, and their walls are thinner than the ones in the arteries.
Just a random question cuz why not? Brainliest to whoever answers correctly!
What is the difference between biology and chemistry?
Answers
Answer:
Biology is science about life and how it survives, breeds, and dies,
Whereas chemistry is about chemical concoctions such as sulfuric acid.
Biology- plants and human body
Chemistry- elements and reactions that make up and result in plants and the formation of the human body
What would happend if weeds are
not removed from the field?
Answers
Answer:
they would die
Explanation:
(first one to answer gets brainliest!), What % of wind energy does the United States use?
Answers
Answer:
Although wind makes up about 8% of total U.S. electricity generating capacity, wind generators provided a smaller share (5%) of total U.S. electricity generation in 2016 because wind turbines have relatively low capacity factors.
Explanation:
An organism is multicellular and lacks a cell wall. Use this table to determine the kingdom in which it belongs. justify your answer.
Answers
what is an ecosystem?
Answers
Answer:
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows
a biological community of interacting organisms and their physical environment.
3. Which organism has DNA located in three organelles?
A. A sponge
B. A fern plant C. A flatworm
D. A bacterium
Answers
In a FERN PLANT, DNA is located in three different organelles (Option B).
Plants are organisms that have chloroplasts, mitochondria, and cell nuclei.In a eukaryotic cell, the genetic material (i.e., DNA) is mainly found in the nucleus, which is an organelle bounded by a double-membrane (bacteria don't have nuclei).However, mitochondria and chloroplasts are also membrane-bound organelles that have their own genetic material.Chloroplasts are only found in plants and algae (sponges and flatworms don't have chloroplasts).In conclusion, in a FERN PLANT, DNA is located in three different organelles (Option B is correct).
Learn more in:
https://brainly.com/question/11136550?referrer=searchResults
are lymphocytes acquired or natural immunity?
Answers
Answer:
Lymphocytes are acquired immunity
PLEASE HELP
I WILL GIVE YOU BRAINLIEST
Answers
Answer:
Most cells in our body have two versions of each chromosome (Body cells). These cells are called diploid. We grow and replace these cells with identical cells through a cell division called mitosis.
For sexual reproduction, we need to make cells that have only one version of each chromosome (sex cells). These cells are called haploid. These unique cells are made through a cell division called meiosis.
Explanation:
haploid = 1
diploid= 2 // "di"=2
our body contains 46 chromosomes, half from our dad and a half from our mom. our repoductive contains 23 chromosomes.
Guys need your help!!! True or False???
If you have a reoccurring flu virus, your body’s memory B cells can help fight off the same virus.
Why is it T or F. Do not just restate statement.
Thanks!
Answers
Answer:
True, your body will develop antibodies against it
Explanation:
brainliest pls?
Which organism shown in the diagram serves as the foundation, or base, for the food web?
hawks
snakes
mice
lizards
plants
grasshoppers
chickadees
Answers
the base would be the beginning of a thing right?
and if it is then plants would be the base
but if it's not then I'm sorry,
but if it's the thing that all the things can eat (except plants) then maybe lizards
srry if I'm wrong ;-;
Why was the evolution of cyanobacteria such a significant event in Earth's history?
Answers
Answer:
Cyanobacteria are blue-green algae that produce chlorophyll and undergo photosynthesis. Oxygen, a byproduct of that photosynthesis, was released into the atmosphere, changing it in such a way that it may have allowed the evolution of more complex forms of life.
Explanation:
Right on ED2021 practice, goodluck! :) Happy holidays!
Which of the following is not included in a bill of sale.
A) A detailed description of the item
B) The make, model, and color of an item
C) A specific set of rights to the buyer
D) Signatures of both parties
Answers
What type of dominance is it when BOTH alleles for a trait are expressed in offspring?
Recessive
Incomplete dominance
Codominant
Complete dominance
Answers
Answer:
Codominant
Explanation:
Hair color, eye color, height are all examples of
Answers
Answer:
physical labels or identifiers
Explanation:
i think that's what you're looking for
Answer:
genetic features
Explanation:
Which of the following is not a line of evolutionary evidence supported by empirical evidence?
a. How similar DNA is between organisms
b. The length of the organism’s life
c. Where fossils are found
d. How similar the organisms were as embryos
Answers
Which pair of microscope views represents a eukaryotic cell and prokaryotic cell?
Answers
Answer: it might Be C or B
Explanation:
The U.S. government has made it illegal for fossil fuels to receive tax breaks in order to be competitive
in the marketplace
a. True
b. False
Answers
Answer:
a
Explanation:
https://en.wikipedia.org/wiki/Fossil_fuel_regulations_in_the_United_States
A research scientist writes a paper on the initial regrowth of a forest after a fire has damaged the entire ecosystem. Which title would be best for the paper?
Answers
The title that should be best for the paper should be considered as the Regrowth after Fire
What is an ecosystem?An ecosystem comprise of the all organism and the physical environment where they could be interacted with each other.
It should be biotic and abiotic component that should be interconnected via nutrient cycles and the flow of energy.
So as per the given situation, the Regrowth after Fire should be considered as the best title.
Learn more about an ecosystem here: https://brainly.com/question/19345731
Which substance is a compound?
water
gold
oxygen
hydrogen
Answers
ITS WATER I SWEAR
H20 has multiple elements in it so its a compound the others are just single elements
PLEASE giv brainliest
Which of the following is made up of 90% water, and 10% dissolved
materials like nutrients, minerals, vitamins, digested food, and salts? *
red blood cells
white blood cells
plasma
O platelets
Answers
Answer:
Plasma
Explanation:
The blood is a key part of the circulatory system. It is a tissue composed of cells that make it up. The blood contains the following components namely; plasma, red blood cells/erythrocytes, white blood cells/leukocytes, and platelets/thrombocytes.
The plasma is referred to as the "liquid" part of the blood and makes up the major part of the blood tissue. The plasma contains 90% water, and 10% dissolved materials like nutrients, minerals, vitamins, digested food, and salts. Hence, based on this question, the answer is PLASMA.
Which of these statements about constellations are true?
Constellations are always changing and may form new images.
Constellations are groups of stars that form patterns in the night sky.
Constellations are groups of stars that can be seen in specific areas of the night sky.
Each constellation has a story about what it means or represents.
Answers
The statements which are true about constellations are as follows:
Constellations are groups of stars that form patterns in the night sky.Each constellation has a story about what it means or represents.Constellations are always changing and may form new images.Thus, the correct options for this question are A, B, and D.
What do you mean by Constellations?Constellations may be defined as clusters of stars that form a recognizable pattern and were imagined in order to construct noticeable and apparent configurations of objects or creatures in the sky, especially at night.
These groups of stars are also present in the day but they are not perceived due to the extremely high light of the sun. So, they form patterns in the night sky. These groups of stars are not specifically present as they are distributed randomly and can form new images.
Therefore, the correct options for this question are A, B, and D.
To learn more about Constellations, refer to the link:
https://brainly.com/question/667281
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Vacuoles are cellular organelles that are found in all plant and fungal cells. In plant cells, vacuoles tend to store large amounts of water, so they can push outward on cell walls and help keep plants upright. In fungal cells, vacuoles often store materials that are toxic to the cell.
According to the above information, how do vacuoles help fungal cells maintain homeostasis?
A.
by storing large quantities of water
B.
by allowing the cells to get rid of waste
C.
by producing more cellular organelles
D.
by helping the cells extract energy from food
Answers
Answer:
D. by helping the cells extract energy from food
Explanation:
Fungi are decomposers so they normally need some sort of food to grow. To get the energy to grow, they extract it from the food. Fungi will get their energy from dead animals, dead plants, etc.
if a vector not have origin of replication result in what
Answers
Answer:
What will be the consequence of not having an origin of replication (ori) in the vector? Explanation: In the case ori is absent, the vector won't be able to replicate
Explanation:
As the replication won't take place, only one of the daughter cells would be having the vector. A colony of transformed colonies won't be obtained.
if a vector does not has the origin of replication result in not doing replication as the unit of replication is Ori.
In the case Ori is absent, the vector may not be capable of replicating. As the replication may not take place, the handiest one of the daughter cells might be having the vector. A colony of converted colonies may not be obtained.
What is transgene?
Of these, the maximum usually used vectors are plasmids. Common to all engineered vectors have a foundation of replication, a multi cloning site, and a selectable marker. The vector itself is normally a DNA series that includes an insert (transgene) and a bigger series that serves as the "backbone" of the vector.
Thus it is clear that if a vector does not have an origin of replication result in nonreplicating.
To learn more about vectors refer to the link :
https://brainly.com/question/460613
What is the most important organ of the male reproductive system? Why?
Answers
i’d say it’s the testicles because they’re responsible for making testosterone (which is the main male sex hormone) , and for producing sperm
What is the function of stabilizing proteins?
Answers
Answer:
Stabilization of a protein translates into preservation of the protein structure during storage, in thermodynamic equilibrium with its surrounding
Explanation:
mark me brainlest