Over 500 million years ago what was British Columbia ??
Answer:
500-million-year-old fossil found in BC is ancient ancestor of spiders and scorpions. Palaeontologists in British Columbia have found a fossil of the oldest known ancestor of scorpions and spiders.
What tool can be used to measure the motion of planets in our solar
system?
A. Astrolabe
B. Microscope
C. Ruler
D. Compass
Answer:
the answer is astrolabe
Answer:
A. Astrolabe
(I don't have enough words, just ignore this)
In which location would fisherman most likely catch a greater number of fish?
at the shorline
O intertidal zone
O in an upwelling
O on the deep ocean floor
Answer:
On the deep ocean floor
Explanation:
This is because it is the lowest layer of the ocean where little or no light penetrate. In this floor, there are abundance of organic matter which the fish majorly feed and that is why they abundant there. The temperature in deep ocean floor is moderate and it's okay for their survival. The humidity also is moderate and that is why they live there.
What is the difference between abundant and scarce resources?
Does all living thing have DNA?
Answer:
No
Explanation:
plants or animals don't need a DNA
Answer:
yes
Explanation:
l o l
ANSWER FAST‼️‼️‼️Based on the information in the stimulus and Map 1, which
statements best explain why opal is found in places such
as Australia? Choose the two correct answers.
Answer:
Australia has large amounts of sandstone and silica.
and
Opal can only be formed where an ocean comes in contact with land.
Explanation:
because it needs standstone and a ocean to be able to create opal
Opal can only be formed where an ocean comes in contact with land. So, the correct option is (B).
What is an Opal?Opal is defined as a hydrated amorphous form of silica where the water content can range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous property, opal is classified as a mineral, in contrast to the crystalline forms of silica, which are considered minerals.
Opal is arguably the most unique, diverse and beautiful, it does not have a defined crystalline structure which takes on many shapes and colors and thus is very unpredictable.
It can be formed where the sea is in contact with the sand, as in places such as those in Australia.
Thus, Opal can only be formed where an ocean comes in contact with land. So, the correct option is (B).
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Your question is incomplete, most probably the complete question is :
Based on the information in the stimulus and Map 1, which statements best explain why
opal is found in places such as Australia? Choose the two correct answers.
A. Australia has large amounts of sandstone and silica.
B. Opal can only be formed where an ocean comes in contact with land.
C. An inland sea once covered central to eastern Australia.
D. Australia has a very hot desert-like climate in most areas.
E .Australia has very few active volcanoes across the continent.
If the half-life of uranium-235 is 700 million years and you have 16 atoms of it, how many half-lives (700-million-year units of time) will pass before only 1 atom of uranium-235 is left?
A. 6
B. 7
C. 5
D. 4
Answer: D
Explanation:
Rising air cools which results in evaporation.
TRUE
FALSE
Katie designed an experiment using a paint roller pan, sand, and water. The steps of the experiment are listed below.
Put 3 inches of moist sand on a paint roller pan.
Make a beach by scooping the sand toward the higher portion of the pan.
Put some soil with very small plants growing on it on the sand.
Pour water into the deeper end of the pan.
Pour red mineral oil down the beach and into the water.
Move the roller pan to create wave like motion in the water.
Katie's model most likely represents the interactions between the:
A) Atmosphere, ocean, and cryosphere
B) Atmosphere, ocean, and biosphere
C) Cryosphere, biosphere, and ocean
D) Geosphere, hydrosphere, and biosphere
Answer:
D
Explanation:
i hope i got the right answer but if i do can i get brainliest??
Answer:
your answer is D
Does an unusually cold day in summer indicate that a region's climate has changed?
A
Yes; climate changes over the short term.
B
Yes; climate describes the temperature of a region at a given time.
C
No; although weather may change, climate does not change.
D
No; climate describes long-term average conditions.
If you were a pea famer and you had both tall and dwarf pea plants but you wanted a pure breeding strain of tall plants how would you do it? (Tall plants are dominant to dwarf ones)
Answer and Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files.
Which of the following BEST represents competition among organisms?
A. zebras staying together in groups to avoid predators
B. different types or species of trees trying to obtain sunlight and water
O
c. a walking stick insect resembling its environment
D. a cheetah hunting and killing a gazelle for food
Answer:
B
Explanation:
please help grades are due today
what is the relationship between structure and function of molecules
Answer:
PS:Can I be brainliest.
Have a nice day
Explanation:
Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals. When an atom forms covalent bonds, the orbitals in its valence shell are rearranged.
Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals.
What is molecules?
The smallest component of a substance that possesses both its chemical and physical characteristics. One or more atoms make up molecules.
They may have the same atoms (for example, an oxygen molecule has two oxygen atoms) or different atoms if they have more than one (a water molecule has two hydrogen atoms and one oxygen atom).
Biological molecules like DNA and proteins can include thousands of atoms. When an atom forms covalent bonds, the orbitals in its valence shell are rearranged.
Therefore, Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals.
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reactant - product
If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?
A) 0 grams
B) 2 grams
C) 4 grams
D) 8 grams
Answer:
C
Explanation:
Answer:
c 4 grams
Explanation:
due to the law of conservation of matter, a reaction will produce the same mass as the reactant
consist of either one or two long chains of repeating units called nucleotides. DNA and RNA are the two main types.
Answer:
In case of both DNA and RNA, in general it is the nucleotides.
Nucleotides basically consists of three parts. The sugar(deoxyribose in DNA and ribose in RNA, both of which are pentose sugars), nitrogenous base and a phosphoric acid group.
The only component that varies in the nitrogenous base. There are five different types.
1.Adenine(A)
2.Guanine(G)
3.Cytosine(C)
4.Thymine(T)
5.Uracil(U)
1 and 2 are known as purines.
3, 4 and 5 are known as pyrimidines.
In DNA, A base pairs with T by means of a double hydrogen bond and G pairs with C by means of a triple hydrogen bond.
In RNA, A base pairs with U by means of a double hydrogen bond and G pairs with C by means of a triple hydrogen bond.
what is the level of organization for All living organisms on Earth
Answer:
The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Explanation:
Hope it helps!
Answer: biosphere
Explanation:
help pleaseeeeeeee
i attached a image
Answer:
I think it is the grasshopper.
Answer:
Based on the food chain, we cannot tell for sure
Explanation:
You can only identify omnivores with a food web. In food chains it only shows one source of food for each animal, so we wouldn't know if one of the animals eats both autotrophs and heterotrophs.
Use the dichotomous key to identify the leaf pictured above.
Mimosa
White oak
Scarlet oak
American beech
Answer:
C. Scarlet Oak
Explanation:
USA Test Prep
A dichotomous key is an essential scientific means by which the various organisms can be identified by the observable traits and attributes. The dichotomous key contains various questions related to the group of organisms that can have those traits.
Scarlet oak is the leaf in the picture.
How to identify the leaf based on key?The leaf of the Scarlet Oak is of the simple type that is it does not have smaller leaflet divisions and is attached to the petiole or the stem of the plant.Only one leaf at a time is attached to the petiole and not in bunches. The leaf of the plant is lobed that is has various protrusions like pointed or round.The leaf of the plant is pointed at the tips and shows that it belongs to the Scarlet Oak plant.Thus, option C is correct.
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What is digested in the small intestine including the nutrients, substance, enzyme and final product of the thing being digested
Answer:
The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones. or Complete digestion takes place in the small intestine as it finally absorbs the nutrients. The end products of digestion are amino acids, fatty acids, glycerol, and glucose.
Explanation:
If you're talking about the end product go with the latter
The human voice box is called ................
Answer:
larynx or vocal chord..
Answer:
larynx
Explanation:
help, thank you
How does using a microscope allow you to see what’s biotic or abiotic?
(how to know if a cell is abiotic or biotic)
Answer:
Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem.
Explanation:
If two forces on an object are not equal in size, then the forces are unbalanced, and a change in motion results. Which of the following examples does NOT represents an object with an unbalanced force?
A car sitting in a garage
A leaf falling from a tree
A rocket being launched
A baseball is thrown into the air
why is only one nucleotide added at a time during DNA replication?
- to maintain the DNA mutations at an equal rate
- to reduce DNA mutations
- to increase DNA mutations
- to pass DNA mutations to the new cell
Answer:
answers is to increase DNA mutations
this is correct answerl hope it's helpful for u...
1. What is a renewable natural resource?
2. What is a nonrenewable natural resource?
i need help filling out a graph.
Table 2: Translation of mRNA molecules
Codons. tRNA Anticodons. Amino Acid. Number of Water Molecules Produced
AUG (start)
i just need this first line
Answer:
Hello, did you finish it? I need help filling it out as well.
Explanation:
Define the following:
Cellular Respiration+ fermentation
Explanation:
Fermentation is another anaerobic (non-oxygen-requiring) pathway for breaking down glucose, one that's performed by many types of organisms and cells. In fermentation, the only energy extraction pathway is glycolysis, with one or two extra reactions tacked on at the end.
are two epigenetic mechanisms that can prevent DNA from being accessible to transcription molecules. When the DNA is unwound, molecules that bind to determine when and how to transcribe genes. When gene transcription begins, a special type of protein known as binds to a promoter and assembles RNA. An activator is a transcription factor that binds to and promotes transcription. A repressor is a transcription factor that binds to and prevents transcription. Even if a gene is transcribed, its ultimate translation and expression can be silenced by
Answer:
microRNAs
Explanation:
Within the cell, there are different types of regulatory non-coding RNAs (ncRNAs) such as microRNAs (miRNAs), small-interfering RNAs (siRNAs), piwi-interacting RNAs (piRNAs), long ncRNAs, etc., which are able to regulate gene expression. miRNAs are evolutionary conserved small ncRNAs (typically 18-23 nucleotides in length) known to inhibit gene expression by base-pairing with complementary target mRNAs, and thus trigger RNA interference (RNAi) pathways (e.g., mRNA degradation, inhibition of translation, etc). These miRNAs form part of a ribonucleoprotein complex named RNA-induced silencing complex (RISC) that acts to trigger RNAi mechanisms.
What are THREE consequences of a warming Earth over the next 50 years?
Answer:
increase in sea level due to the melting of glacierswarming of the sea / oceans / river will gradually kill marine lifedesertification.Hi! I need help with this question. I’m not 100% sure what it is asking, so if you could at least tell me what it is wanting me to do that would be great :)
Answer:
DNA: TAC CCG GGA TTC CAT AAC
mRNA (A-U and C-G): AUG GGC CCU AAG GUA UUG
Amino acids: Met Gly Pro Lys Val Leu