Answer:
The answer is D.
Explanation:
We can easily knock out answer choice A, as fossils only take around 10,000 years to form completely. Not just for the organisms that lived 3 million years ago. Answer B as well, since theres been fossils for about just every animal out there. Answer C, we have seen the tiniest of organisms turn into fossils before, so this is outright wrong. Answer D, is correct. Why? Because fossils need the PERFECT conditions to be properly made. We´ve all seen a dead cat on the road or two. Everytime we visit, we notice how slowly more and more deterioated the body gets. Until theres nothing but maybe the skull and some other few spare bones left. Which those bones, soon turn into fertilizer for the ground / dirt beneath it.
Researchers returning from the world’s most ambitious study ever of the
A. Mars
B. South Pole
C. North Pole
Answer: North Pole
Explanation: On Oct 12th, 2020 the largest expedition ever undertaken came to an end after researchers spent over a year studying climate change and ice drifting in the Arctic.
Crossing over occurs during prophase 1 of meiosis. Why is the process of crossing over significant for sexual reproduction?
Answer:
When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between homologous chromosomes. ... It results in gametes that have unique combinations of chromosomes. In sexual reproduction, two gametes unite to produce an offspring.
Explanation:
the rate of photosynthesis can be affected by several factors, such as light intensity, temperature ,water, and carbon dioxide. describe how the lack of water in an environment can affect the amount of carbon dioxide absorbed by the plant
Answer:
Plants need water, so that their guard cells can fill up and become turgid which would allow the stomata to open and gas to exchange. If there is not much water, not much gas exchange can occur hence not much Carbon dioxide can be taken in.
Explanation:
Plants require water for the process of photosynthesis. Plants need water so that their guard cells can fill up and become turgid. This allows the exchange of gases in the stomata.
How does water affect photosynthesis?
During photosynthesis, the plants take in carbon dioxide and water molecules from the air and soil particles. Within the plant cell, this water is oxidized to generate oxygen gas, meaning that it loses electrons, while the carbon dioxide gas is reduced in the chloroplast of the plant cell by gain of electrons to produce carbohydrates. This process transforms the water into oxygen gas and the carbon dioxide gas into glucose molecules (carbohydrates).
Plants need water, so that the guard cells in the plant can fill up and become turgid which would allow the stomata to open and exchange of gases. If there is not much water present in the guard cells, not much gas exchange can occur hence not much of the carbon dioxide can be taken in from the atmosphere.
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What are 2 things that can be done to encourage sustainable resources for Earths human population
Answer:
Educate them and show the benefits of sustainable resources
Explanation:
How do C4 plants fix carbons?
Answer:
C4 plants—including maize, sugarcane, and sorghum—avoid photorespiration by using another enzyme called PEP during the first step of carbon fixation. ... PEP fixes carbon dioxide into a four-carbon molecule, called malate, that is transported to the deeper bundle sheath cells that contain Rubisco.
Explanation:
The ribosome-covered structure found in the cytoplasm of a cell is called the
А.
Golgi apparatus
B
rough endoplasmic reticulum
lysosome
smooth endoplasmic reticulum
Answer: rough endoplasmic reticulum
Explanation:
The characteristic of life that represents birds migrating to the south is
Answer:
Living things respond to their enviorment.
Explanation:
Hope that helped!
Suppose you mate a black rooster with a white hen. The feathers of all the offspring are “gray,” a color that is intermediate between black and white. Explain the inheritance pattern in these chickens.
Answer:
Incomplete dominance
Explanation:
The inheritance pattern described here is called incomplete dominance (sometimes also referred to as semi-dominance or partial dominance). This occurs when the dominant allele doesn't fully prevent the effects of the recessive allele from being expressed. This results in the trait of the offspring being equivalent to the mix of both alleles. If the rooster's feathers are black and the hen's are white, the chicks' will be grey.
Ecosystems that experience the same climate conditions are grouped together into larger regions called
A.cycles
B.equators
C.poles
D.biomes
PLEASE HELP ASAP WILL GIVE BRAINLIEST
Why is the dysphotic zone around coral reefs shallower than the dysphotic zone in the open ocean?
There is more oxygen in the open ocean.
The sun is brighter over the open ocean.
There is more nitrogen by the coral reefs.
There is more plankton by coral reefs.
Answer: There is more plankton by coral reefs.
Explanation: Plankton tend to hang around surface waters which coral reefs also grow in. And most of that Plankton are plants that need more sunlight. So the sun would be brighter in shallower waters rather than open ocean.
BRAINLYIST HELP PLSSSS
Answer:
If its asking for how much liquid was added it would be 25 grams, because I can tell that half of 50 is 25 and then that 25 seemed to be what was added.
Explanation:
Hope its right! Not too sure what the question asks for!
Please help! Super easy! (Photo)
Answer:
I don't know you really didn't give us a question so sorry
Answer:
I don't really get this., is there supposed to be a photo?
What might explain differences in properties between oxygen and ozone when both substances are made of the same type of atoms?
Answer:
The diffrence between these very similar gases is that ozone contains three oxegyn atoms well the oxegyn we breate contains two atoms. Its like this because solar rays convert O2 to O3
brainliest - An offspring inherits an equal amount of its genetic information from each parent true false
Answer:
true
they get equal chromosome from each parent.
Answer: False
Explanation:
While women do inherit 50% of their DNA from each parent, men inherit about 51% from their mother and only 49% from their father. ... To answer this question, first a little 101 in genetics: all humans, both male and female, inherit 23 chromosome pairs from their parents, for a total of 46 chromosomes
A process that increases genetic diversity during meiosis
Answer:
During the prophase of meiosis I, the double-chromatid homologous pairs of chromosomes cross over with each other and often exchange chromosome segments. This recombination creates genetic diversity by allowing genes from each parent to intermix, resulting in chromosomes with a different genetic complement.
Explanation:
Through a process known as crossing over, which enables new combinations of variants to appear in the gene pool, meiosis promotes genetic diversity.
What is meiosis?During the prophase of meiosis I, homozygous chromosomes are next to one another and exchange genetic material.
There could be a heterozygous state for a gene if two distinct alleles are present on the same genetic locus on homologous chromosomes. (For instance, an allele for antigen A on one chromosome and an allele for antigen B on another; both are used to determine the ABO blood group.)
Numerous genes are linearly ordered on chromosomes; as a result, some of them may still be heterozygous. (The same person may be heterozygous for the ABO blood group, iris color, and sickle cell anemia).
Therefore, Through a process known as crossing over, which enables new combinations of variants to appear in the gene pool, meiosis promotes genetic diversity.
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Plants have structures that help perform many physiological processes that are required for the plant’s survival. Which of the following statements correctly pairs a plant’s structure to its function?
A plant’s leaves absorb water from the environment that can be used during the process of anaerobic respiration.
A plant’s guard cells protect the plant from harsh environmental conditions, pests, and diseases that could harm the plant.
A plant’s chloroplasts are responsible for producing the green pigment required to attract the pollinators necessary for fertilization.
A plant’s stomata are responsible for allowing gases to exchange between the leaf and the environment during the process of photosynthesis.
Answer:
D
Explanation:
A stomata is responsible for opening up, to allow gas exchange which is needed for photosynthesis .
The statement that correctly pairs a plant’s structure to its function is A plant’s stomata are responsible for allowing gases to exchange between the leaf and the environment during the process of photosynthesis. The correct option is D.
What are plants?Plants are chlorophyll-containing living organisms. They are of various sizes, shapes, and colors. They are autotrophs, which means they make their own food.
Photosynthesis is a process by which plants make their own food. The process occurs in the stomata of the leaves. The stomata contain chlorophyll which traps sunlight, so they have a relationship between function and structure.
Thus, the correct option is D. A plant’s stomata are responsible for allowing gases to exchange between the leaf and the environment during the process of photosynthesis.
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What happens to water
as it evaporates?
A. Atoms are added
B. It becomes less dense water
vapor
C. New substance is formed
D. Atoms are destroyed.
Water can only evaporate when it is heated. When water is under heat, the water molecules vibrate and move around so quickly that the molecules escape into the atmosphere. The molecules become less and less dense as they float into the air.
Match each of Earth's spheres with the correct description
Answer:
atmosphere-air surrounding earth
biosphere-all of earth living things
geosphere-earths interior, rocks, minerals, and landforms
cryosphere-glaciers, icecaps, and iceburgs
hydrosphere-oceans, lakes, rivers, streams, and ground water
Explanation:
scientific explanation; i use edg too.
The layers of the earth are divided into spheres based on their constituents. The lithosphere, hydrosphere, geosphere, biosphere, etc. are the spheres. The correct matches are 1. d, 2. b, 3. c, and 4. a.
What are spheres?Spheres are the subsystems that divide the places or the elements like air, water, land, and soil.
The correct matches are:
hydrosphere - oceans, lakes, glaciers, rivers, streams, and groundwateratmosphere - air surrounding the earthgeosphere - earth interior, rocks, minerals, and landformsbiosphere - all of earth's living thingsTherefore, the spheres divide the places and areas.
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The complete question is attached to the image below.
Brainliest for correct answer
What are some of the medical advances made recently?
MRIS
Camera's small enough to swallow
Sterilization of instruments
Eye glasses
Penicillin
CAT scans
Answer:
B, C, F
I'm not sure if these are exactly correct, but I hope I helped at least a bit!
muscle cells in athletes often have more mitochondria than muscle cells in nonathletes. Based on this observation, it can be inferred that the muscle cells in athletes
Answer:
...it can be infered that athletes muscle cells make and use more energy.
Imagine a digestive system where food entered the small intertwine directly without first going through the oral cavity and stomach. What would he the disadvantages of this type of digestive system?
why is the cell membrane often referred to as a "phospholipid bilayer"
Answer:
Porque esta formada por dos capas de moléculas de lípidos
Explanation:
DNA is not the only factor that determines your traits. Your traits are also determined by __________. ???
A zygote is the result of which life cycle process in spermatophytes?
a) germination
b) fertilization
c) pollination
d) cell respiration
PLEASE HELPPPP ME
Which would most likely increase the carrying capacity for humans in a
certain region?
O A. Increased fertility rate
B. Less available fresh water
C. Less space to build houses
D. Better soil for growing food
Someone please help me I'm stuck on this
Answer: D. better soil for growing food
Explanation:
What function do teeth play in digestion?
Answer:
When you put food in your mouth, your teeth break the food into smaller pieces, and the salivary glands under your tongue and on the sides and roof of your mouth release saliva. This saliva mixes with your food to make it easier to swallow.
Explanation:
How does biodiversity reduce one species’ dependence on another species? Explain, and provide an example.
Answer:
For example, two animal predators may consume different prey items, so they are less likely to compete with one another, allowing higher total biomass of predators in the system. In the case of plants, all species may utilize the same suite of resources (space, light, water, soil nutrients, etc.)
Explanation:
The presence of large biodiversity can reduce one species dependence on another species as it provides resources such as food which will reduce the chances of a species to become threatened.
What is biodiversity?Biodiversity can be defined as the variety of all the different kinds of organisms such as the plants, animals, insects and microorganisms which live on the planet.
A large biodiversity is helpful for the species as it increases the stability of the ecosystems. This is possible because it reduces the dependence of one species on another, for the instance for food. For example, if a species has only one food source, it may be easily threatened by the environmental changes. However, if many species similar to it are present in the ecosystem then the chances of the species to become threatened are very low.
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Sperm cells of a specific species of mice have 16 chromosomes. What is the expected number of chromosomes in an adult mouse of this species?
Answer:
32 chromosomes (16 pair)
Explanation:
Gametes or sex cells of sexually reproducing organisms are produced via a process called MEIOSIS, which is a type of cell division that reduces the chromosomal number of the parent cell by half. Hence, a mice that produces a sperm cell (gametes) via meiosis with 16 chromosomes will have double that amount in somatic cells of that mouse.
That is, the expected number of chromosomes in an adult mouse of this species with 16 chromosome in its sperm cell is 32 since half of this number makes up the chromosomal number in gametes
HI AGAIN! HELP!!!
All living things need energy to survive. The most common source of energy for organisms is glucose molecules, which are used as food. A plant’s food is no exception. Where do plants get the carbon needed to make glucose molecules during the process of photosynthesis?
from the ground.
from the air.
from the water.
from the sun.
Answer:
the air
Explanation:
Plants get the carbon from the air which are needed to make the glucose molecules during the process of photosynthesis in plants. Thus, the correct option is B.
What is Photosynthesis?Photosynthesis is the process of formation of carbohydrate (sugar) in the green leaves of plants. This process takes place in the presence of light. In this process, the light energy (solar radiation) is trapped in the chlorophyll pigment present in the green leaves of plants, this energy is converted into chemical energy in the form of glucose (carbohydrate) which is used by the plants in various processes.
The reaction includes the reaction between carbon dioxide and water molecules which are present in the air to produce glucose and oxygen gas which are consumed as food and in the process of respiration.
Therefore, the correct option is B.
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