Answer: The remains of an organism that lived 500 years ago is called a fossil.
Explanation:
A fossil can be defined as dead remains of plants and animals that existed past geological era. The traces of bones, and other skeletal remains, pollen, hard wooden materials can be found in the compact rock as the soft parts of the organisms are decomposed and decayed. The remains like shells, exoskeleton, amber, hair, and other can also be found. It takes many years for the development of fossil beneath the earth crust. The morphological, anatomical, physiological and molecular features can be assessed to know the age of the fossil.
Answer:
fossil is any trace of prehistoric life
PLS HELP WILL GIVE BRAINLIEST
1. The organism represented by letter F is an?
_________________
2: Which letters contain organisms that are autotrophic?
Answer:
F is a secondary consumer
A and B are autotrophic
water blank when it becomes ice
The type of evolution that produced species P and H from species B:
A. divergent evolution
B. sequential evolution
C. phyletic gradualism
D. punctuated equilibrium
List the Earth’s 4 spheres and give 1 example from your Environment for 2 of the speres.
Answer:
read this
Earth's Spheres
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called “spheres.” Specifically, they are the lithosphere (land), hydrosphere (water), biosphere (living things), and atmosphere (air). Each of these four spheres can be further divided into sub-spheres. To keep things simple in this course, there will be no distinction among the sub-spheres of any of the four major spheres.
Lithosphere - Land
The lithosphere contains all of the cold, hard solid land of the planet's crust (surface), the semi-solid land underneath the crust, and the liquid land near the center of the planet.* The surface of the lithosphere is very uneven (see image on right). There are high mountain ranges like the Rockies and Andes (shown in red), huge plains or flat areas like those in Texas, Iowa, and Brazil (shown in green), and deep valleys along the ocean floor (shown in blue).
The solid, semi-solid, and liquid land of the lithosphere form layers that are physically and chemically different. If someone were to cut through Earth to its center, these layers would be revealed like the layers of an onion (see right image above). The outermost layer of the lithosphere consists of loose soil rich in nutrients, oxygen, and silicon. Beneath that layer lies a very thin, solid crust of oxygen and silicon. Next is a thick, semi-solid mantle of oxygen, silicon, iron, and magnesium. Below that is a liquid outer core of nickel and iron. At the center of Earth is a solid inner core of nickel and iron.
* Note: The word "lithosphere" can take on different meanings depending on the speaker and the audience. For example, many geologists--scientists who study the geologic formations of Earth--reserve the word "lithosphere" to mean only the cold, hard surface of Earth, not the entire inside of the planet. For the purpose of this course, however, there will be no distinction among the various layers of land. The word "lithosphere" will be used in reference to all land in Earth's system.
Hydrosphere - Water
The hydrosphere contains all the solid, liquid, and gaseous water of the planet.** It ranges from 10 to 20 kilometers in thickness. The hydrosphere extends from Earth's surface downward several kilometers into the lithosphere and upward about 12 kilometers into the atmosphere.
A small portion of the water in the hydrosphere is fresh (non-salty). This water flows as precipitation from the atmosphere down to Earth's surface, as rivers and streams along Earth's surface, and as groundwater beneath Earth's surface. Most of Earth's fresh water, however, is frozen.
Ninety-seven percent of Earth's water is salty. The salty water collects in deep valleys along Earth's surface. These large collections of salty water are referred to as oceans. The image above depicts the different temperatures one would find on oceans' surfaces. Water near the poles is very cold (shown in dark purple), while water near the equator is very warm (shown in light blue). The differences in temperature cause water to change physical states. Extremely low temperatures like those found at the poles cause water to freeze into a solid such as a polar icecap, a glacier, or an iceberg. Extremely high temperatures like those found at the equator cause water to evaporate into a gas.
** Note: Some scientists place frozen water--glaciers, icecaps, and icebergs--in its own sphere called the "cryosphere." For the purpose of this course, however, frozen water will be included as part of the hydrosphere. The word "hydrosphere" will be used in reference to all water in Earth's system.
Biosphere - Living Things
The biosphere contains all the planet's living things. This sphere includes all of the microorganisms, plants, and animals of Earth.***
Within the biosphere, living things form ecological communities based on the physical surroundings of an area. These communities are referred to as biomes. Deserts, grasslands, and tropical rainforests are three of the many types of biomes that exist within the biosphere.
Besides plants, list 2 other organisms that carry out photosynthesis.
HELP PLEASE!!!!
Answer:
Photosynthesis is carried out by algae, cyanobacteria, and even some animals.
Match the sensory characteristic with how it is coded by the nervous system. - Sensory modality - Location of the stimulus - Intensity of the stimulus - Duration of stimulus A. Which sensory neurons are activated B. Receptive fields C. Frequency of action potentials D. Duration of action potential train (i.e., continued firing of action potentials in sensory neurons) E. Size of action potential F. Duration of a single action potential
Answer:
a) Which sensory neurons are activated
b) Receptive fields
c) Frequency of the action potentials and size of action potential
d) Duration of action potential train and Duration of a single action potential
Explanation:
Sensory modality : The sensory modality is Which sensory neurons are activatedLocation of the stimulus : The location of the stimulus is in the Receptive fieldsIntensity of the stimulus : The Intensity of the stimulus represents the frequency of the action potentials and size of action potential Duration of stimulus : The duration of the stimulus is Duration of action potential train and Duration of a single action potentialBone is composed of
A. Living cells, protein fibers, and calcium salts
B. Living cells, dead cells, and protein salts
C. Synovial fluid, protein fibers, and calcium salts
D. Living cells, bone marrow, and calcium fibers
Answer:
The most suitable answer :A. Living cells, protein fibers, and calcium salts
Explanation:
see image
Answer:
A. Living cells, protein fibers, and calcium salts
Explanation:
Bone is composed of living cells, protein fibers, and calcium salts
specialized functional bodies within the cytoplasm of a cell, what is the structure called?
Answer:
Explanation:
Cytoplasmic organelles are "little organs" that are suspended in the cytoplasm of the cell. Each type of organelle has a definite structure and a specific role in the function of the cell.
What
The differee between Riversible Inhibition and
irrversibel Inhibition
Answer:
Explanation:
Irreversible inhibitors usually react with the enzyme and change it chemically (e.g. via covalent bond formation)
In contrast, reversible inhibitors bind non-covalently and different types of inhibition are produced depending on whether these inhibitors bind to the enzyme, the enzyme-substrate complex, or both.
What determines the direction of gas movement?
Answer: The direction of gas movement is determined by partial pressure differences. 2) At the arterial end of the pulmonary capillaries, O2 diffuses from the alveoli into the blood, while CO2 diffuses from the blood into the alveoli.
Explanation:
→ Oxygen and carbon dioxide diffuse across a respiratory membrane.
Factors determining gas movement:
The concentration gradient of the gases and the partial pressure of the gases.The differences in concentration on either side of the cell membrane.→ In diffusion of gases:
The amount of surface area available for diffusion.The distance the gas particles must travel.The higher the concentration gradient across the gas-exchanging surface, the faster the rate of diffusion across it.Learn more:
brainly.com/question/25735518
The pie chart shows us the annual diet of a typical black bear. The percentages are based on the approximate weight of the foods
eaten. How much more fish do bears eat compared to rodents?
A)
2x
B)
3x
10X
D)
30X
Answer:
B) 3X
Explanation:
3X Bears eat 3X more fish than rodents. Bears eat 5% rodents and 15% fish. That is a 1:3 ratio of rodents to fish or 3X more fish.
69 points! Pls tell me where to put the star I will mark brainliest but If ur answer is unrelated I will report u. Place the STAR on the pioneer species.
Answer:
I believe it is the moss on the ground because moss can grow quickly and since a pioneer species is the first thing that came, it colonized first, like a pioneer. Have a nice day :)
Explanation:
Reason why a pest species is introduced sexually
OF CHAPTER REVIEW QUESTIONS
iple Choice Questions
. The principal site of protein synthesis in a cell is
a. Endoplasmic reticulum
C.
Ribosomes
b. Nucleus
d. Golgi - Apparatus
a.
Answer:
b. Nucleus
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells. Generally, cells have the ability to independently replicate themselves. In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles with their respective functions in all living organisms such as trees, birds, and bacteria include;
1. Cell membrane : is the wall of the cell and typically controls what leaves and enters the cell.
2. Mitochondria : it provides all the energy required in the cell by transforming energy forms.
3. Lysosomes : they are responsible for absorbing materials and breaking the materials taken in by the cells.
4. Chromosomes : they give sets of instructions for the synthesis of products.
5. Ribosomes : they are involved in the build up of proteins.
6. Endoplasmic Reticulum : this is where the ribosomes perform their tasks.
7. Cytoskeleton : they help to maintain and support the shape of the cells.
8. Vesicles : they ensure proteins are properly transported to the right and exact location.
9. Golgi apparatus : it prepares the protein for export by chemically tagging them.
10. Nucleus : it controls all the activities taking place in the cell and the synthesis of proteins.
Hence, the principal site of protein synthesis in a cell is nucleus.
PLEASE HELP FAST
Which of the following are carbohydrates?
Select all that apply.
fats
glycogen
starches
sugars
Answer:
fats, starches, sugars
Carbohydrates are fats, starch, and sugars. Thus, option A, C, and D are correct.
What are Carbohydrates?Carbohydrates is defied as that contains biomolecule that contains carbon hydrogen and oxygen in a ratio of 2:1.
Carbohydrates are mane source of energy of the body they work as fuel for the brain, kidneys central nervous system and heart muscle.
Cn(H2O)n is the basic formula for all carbohydrates . But this formula have limitation i.e it applies where same amount of carbon and water are use.
Initially the terms carbohydrate was used to describe compounds that have really contains carbohydrates because they had simple formula CH20.
In modern era carbohydrates are classified on the basis of their structure not on their formulae. Such as aldehydes and ketones are now known as polyhydroxy.
Therefore,carbohydrates are fats, starch, and sugars. Thus, option A, C, and D are correct.
Learn more about carbohydrates here:
https://brainly.com/question/14614055
#SPJ2
PLEASE ANSWER ASAP DUE IN 1 MIN!!!!!!!!!!!!!!!!!!!!!!
In a certain breed of cow the gene for red fur, R, is codominant with that of white fur, W.What would they be if you breed a red & white cow with a red & white bull?
A. G: 100% RW P:red and white cow
B. G:25 % RR 75% RW P: red
C. G:25% RR, 25% WW, 50% RW P: 1 red cow, 2 red and white cows, 1 white cow
D. G: 50% RR, 50% Rr P: all red cows
Answer:
D. G: 50% RR, 50% Rr P: all red cows
Explanation:
What happens to a species when it becomes extinct? A. A few members adapt to a new environment. B. Most members move to a new environment. C. All members evolve into a new species. D. No members live to reproduce.
Answer:
D. is your answer
Answer:
no members live to reproduce
Explanation:
trust me im right
What are the necessary conditions for autotrophic nutrition and what are its byproduct ?
➜ The conditions necessary for autotrophic nutrition are sunlight, chlorophyll, carbon dioxide (CO2) and water (H2O).
The byproducts of autotrophic nutrition are water and oxygen.
Answer:
Carbon dioxide, water, chlorophyll pigment, and sunlight are the necessary conditions required for autotrophic nutrition. Carbohydrates (food) and O2 are the by-products of photosynthesis.
BRAINLIEST!!!
Sinkholes are extremely dangerous because they occur quickly and without warning. Sinkholes are a result of both mechanical and chemical
weathering.
Match the descriptions with the correct type of weathering that lead to the formation of sinkholes.
Limestone rock breaks into smaller pieces
Lime stone is rock dissolved by water underground
Pressure Changes on the surface cause the ground to collapse
When calcium carbonate rock sits in the water , it forms bubbles
WHICH ONES ARE MECHANICAL WEATHERING FACTORS AND WHICH ARE CHEMICAL WEATHERING FACTORS!!!
Answer:
The two limestone sentences are chemical weathering.
Pressure Changes is Mechanical.
Calcium carbonate rocks it's in water is chemical.
Explanation:
I'm pretty sure these are right!
Which of the following is an advantage of asexual reproduction? O Asexual reproduction produces greater genetic variation than does sexual reproduction. O Asexual reproduction cannot contribute to the growth of multicellular organisms, whereas sexual reproduction can. O Asexual reproduction allows genes to be shuffled more readily than does sexual reproduction. O Asexual reproduction can produce huge numbers of offspring in a short time
Answer:La reproducción asexual permite que los genes se mezclen más fácilmente que la reproducción sexual
Explanation:
Answer:
O Asexual reproduction can produce huge numbers of offspring in a short time
Which of these places is an example of a freshwater ecosystem?
A. Lake
B. Coral reef
C. Rain forest
D. Desert
Answer:
Lakes (A)
Explanation:
I took the test
what is the complementary strand of ACTAACGGTAGCTAGC
Fish sperm consists mostly of the male fish's DNA. If tested chemically, there would be relatively
high amounts of
A) Nitrogenous bases, sugar and phosphate groups
B) Phospholipids and steroids
C) Triglycerides and ATP
D) Amino acids and unsaturated fats
Which part of the brain controls body movements and processes information from the sense organs? (1 point)
Answer:
cerebral cortex
Explanation:
I'm pretty sure that is correct
HELP I DONT UNDERSTAND
TRUE OR FALSE Nephrons located in the renal cortex and renal medulla.
The correct answer is true.
____cells cannot be replaced when they are damaged.
options:
red blood
nerve
Answer:
Nerve cells
Explanation:
Nerve cells do not renew themself. Sure, they can be repaired.
Explain why yam cannot follow cassava in a crop rotation plan
Answer:
The cassava cutting are placed in the sides of the mounds for yams
Which of the following conditions would activate the unfolded protein response? (check all that apply)
Group of answer choices
a. reduction in receptor-mediated endocytosis
b. synthesis of many extra secreted proteins.
c. mutation of a factor critical for degradation of proteins in the lysosome
d. mutation of a factor important for protein folding in the ER
Answer:
b. synthesis of many extra secreted proteins.
c. mutation of a factor critical for degradation of proteins in the lysosome
d. mutation of a factor important for protein folding in the ER
The conditions that would activate the unfolded protein response are:
Synthesis of many extra secreted proteins.Mutation of a factor critical for degradation of proteins in the lysosome.Mutation of a factor important for protein folding in the ER. What do you mean by unfolded protein response?The unfolded protein response may be defined as a cellular stress response related to the endoplasmic reticulum stress. It is a mechanism through which the accumulation of misfolded protein is induced.
Unfolded protein response gats are activated when there is any mutation or alteration that takes place in the ER, and sometimes lysosomes. Because these are both organelles that mediate the protein trafficking throughout the cell.
Therefore, the conditions that would activate the unfolded protein response are statements (b), (c), and (d).
To learn more about Unfolded protein response, refer to the link:
https://brainly.com/question/11231926
A_____slide has an indentation in the center to hold the specimen , which is advantageous for larger specimen.
A. Coversilp.
B. Depressio.
C. Wet mount
Answer:
B
Explanation:
Answer:
B depressio
Explanation: