Answer:
Explanation:Two of the nuclei (the polar nuclei) move to the center of the embryo sac and fuse together, forming a single, diploid central cell. This central cell later fuses with a sperm to form the triploid endosperm, which will ultimately provide nourishment for the developing embryo (analogous to yolk in animal eggs).
Answer:
endosperm
Explanation:
The second fertilization results in the endosperm, which is a special tissue used to nourish the embryo.
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Answer:
c. How do the positions of the Sun and the tilt of Earth cause seasons?
Explanation:
Answer: C would be best answered by using a model
Explanation:
What is heat?........
Hi There ! Well let's comprehend the topic a bit better and let me walk you through...
Heat!We normally use heat to make food A cup of coffee in the morning or When we are doing our backyard hangouts we use heat to make Yummy steak!Heat isnt always just used to make food!We use heat to Warm up our houses ! Like a chimney we make heat to warm up our houses! Or some people use furnaces it also produces heat and warms up your room or house! Well now that we know what we use it for ....What is heat?
Of course Heat!
Heat is The energy that transfers to many different entities With a slight or major temperature difference!Please take in mind that heat only transfers to objects that are cooler than heat itself!Which means that it is energy that is transferred (or that flows ) from one object or system to another!
More info!
What are the 3 types of heat?Conduction, Convection, and Radiation.Heat can be measured in Btu, calories or joules what we use to measure heat is hermometers and pyrometers!
Hope this helps!
-Tobie the Dog <3
During which season do the rays of the sun hit the Earth at the MOST indirect angle? A) fall B) spring C) summer D) winter
there is no picture but please help i will give 15points
The answer would be D) winter
Hope this helps :)
how are pure carbon, oxygen, & hydrogen different from the compound ethanol which contains all three of those elements
marking brainliest!!
Answer:
They are different because ethanol is a compound that is made by a certain amount of carbon, oxygen and hydrogen, these are the elements that made up ethanol.
Explanation:
Think of it like this ethanol is a cake and carbon, oxygen and hydrogen is the eggs, flours and sugar that is used to make the cake.
How do Zoos have animals develop extreme health complications.
Zoos are cheap and don't properly take care of animals nor do they give the right food portions often being under fed.
Explain at least two advantages of having both parents involved in raising a child as part of a two-parent family.
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Answer:
this is a fake account to make u brainiest
Explanation:
The kidneys, ureters, urethra, and bladder are organs found in which system
Answer:
Urinary System
Explanation:
The organs of the Urinary System include the
kidneys, renal pelvis , ureters, bladder and
Ureethra.
What is the name of the topic that we are covering?
Body Systems
Genetics
Evolution
Cells
Clem is developing a model of a cell. He labels a central structure as the nucleus and writes a caption that describes how DNA is kept inside the nucleus. Which of the following is an important condition of Clem's model?
Answer:
The model describes eukaryotic cells, but not prokaryotic cells.
What are the two cell division processes called?
A mitsis and meisis
B RNA and DNA
C diploid and haploid
D mitosis and meiosis
Answer:
D. mitosis and meiosis
Explanation:
mitosis is a process whereby one cell makes an identical copy of it self and give rise to two cells that are genetically identical. meiosis produces four cells that have half the number of chromosomes of the cell and are generally different from the parent cell HOPE THIS HELPS YOU AND MAKES IT CLEARLY
where os an area where fresh water meets salt water
a. Intertidal zone
b. coral reef
c. estuary
d. plankton
e. kelp forest
f. nertic zone
g. open ocean
Answer:
c. estuary
Hope it helps
Please mark me as the brainliest
Thank you
4. In science, most concepts are related to other concepts. Which of the following is most closely related to the Law
of Conservation of Mass?
A. when rocks are deposited in layers, the oldest layer is on the bottom
B. pressure from a gas increases as the volume decreases
C. energy can neither be created nor destroyed
D, the force of gravity decreases as distance is increased
Answer:
C. energy can neither be created nor destroyed
Explanation:
The law of conservation of mass states that in a chemical reaction mass can neither be created nor destroyed. Similarly, the law of conservation of energy states that the amount of energy in an isolated system is conserved ie. the amount of energy can neither be created nor destroyed, but instead changes form.
Juan picks up a steel utensil and immediately drops it because it's extremely hot. How does the reflex arc work to protect Juan from a worse burn?
Answer:
in a reflex arc, the (sensory) neuron carries the action potential from the (sense organ to the brain)
(iii) Humans have four types of teeth. State which type of tooth mainly in (a) (ii) above.
Answer:
The correct answer is - molars.
Explanation:
Mechanical digestion takes place inside the mouth of an organism by the process called masticating with the help of teeth. There are four types of teeth in the mouth all help in the digestion of the feed incisor cuts the food, canines tear the food, premolars, and molars chew or masticate the food.
The main and major tooth that helps in mechanical digestion is the molar to chew food so it can mix with the saliva to make bolus and chemical digestion.
Deoxyribose differs from glucose because it:
a) Contains 5 carbon atoms
b) Is a polysaccharide
c) Is a hexose
d) Contains twice as many hydrogen atoms as oxygen atoms
Answer:
I think it's d but I am not too sure
what is the shape of the bacteria thiobacillus
Answer:
this bacteria has a rod shaped form
Answer:
rod-shaped
Explanation:
Bacteria in the genus Thiobacilli are classified within the order Pseudomonadales. They are small, rod-shaped cells (0.5 by 1–3.0 µm) which may be motile or nonmotile. Motility is due to a single polar flagellum. Bergey's Manual (1957) lists nine species, most of which are aerobic.
How would you explain why the North & South poles stay so cold, even when they're getting 24-hour sunlight?
Answer:
Use your own words, but look at explanation for example:
Explanation:
They are both so far away from the hemisphere line (which is where the warmth is) so they don't have warm temperatures at anytime of year, unlike in other places there can even be warm temperatures all year round.
why do a lot of cave remain unexplored?
(earth interior question)
Answer:
Caves are distributed widely across the globe. So far, about 17,000 caves have been discovered in just the U. S., and many more have yet to be discovered.
Explanation:
what is the main function of the heart
Answer: Blood carries oxygen and other important nutrients that all body organs need to stay healthy and to work properly. Your heart is a muscle, and its job is to pump blood throughout your circulatory system.
Explanation:
what are two or more genes producing a single trait
If there were a change in the DNA sequence, what would result?
Answer:
mutated dna
Explanation:
there would be either be dna substitutions, deletions or insertions. substitution simply changes the letter. deletion gets rid of a letter. insertion adds another letter.
4. There are two types of traits within a population. What vocabulary word does
this represent?
*
Overproduction
Variation
Descent with Modification
Adaptation
Answer:
The answer is Descent with Modification
Descent with Modification refers to the passing on of traits from parent organisms to their offspring. This passing on of traits is known as heredity, and the basic unit of the heredity is the gene.
Which of the following energy transformations occur when humans use energy from food to exercise?
A. Mechanical - thermal - chemical
B. Thermal - electrical - mechanical C.Radiant - mechanical - thermal
D. Chemical - mechanical - thermal
Answer:
D. Chemical - mechanical - thermal
Explanation:
Food contains chemical energy; when our bodies break down and digest food, the bonds that are broken apart release chemical energy. Our bodies convert this to mechanical energy to power movement, from movements as small as blinking or our hearts beating, to bigger movements like running or swimming. When we exercise or move, we also release heat which is thermal energy.
The energy transformations that occur when humans use energy from food to exercise is: D. Chemical - mechanical - thermal.
What is energy?Energy can be defined as the ability to do work. Thus, energy must be possessed or transferred to a physical object (body) before it can be used in doing a work or heating a system.
The forms of energy.In Science, there are different forms of energy and these are;
Gravitational energyElectrical energySound energyChemical energyThermal energyMechanical energyIn conclusion, the energy transformations that occur when humans use energy from food to exercise is chemical energy to mechanical energy and lastly to thermal energy.
Read more on energy here: https://brainly.com/question/1242059
The table shows a mutation in a DNA sequence.
Original
GCATATGCTATAGCGACT
Mutated
GCATTGCTATAGCGACT
What type of mutation is depicted in the table?
O A. deletion
OB.insertion
O C. substitution
D. point
its type of mutation depicted in the table is D.point
The cell is the smallest part of a human that is still
an element
b
living
с
a theory
d
an egg
what food class is salt,oranges,butter,beverages,yoghurt,milk
Answer: Dairy for butter, milk, and yogurt. Fruit for oranges. Salt and beverages don't have a food group.
Explanation:
Answer:
Milk is Dairy, yougert is Dairy, Orange is a fruit, Butter I don't know, and beverages it depends
Explanation:
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List all the systems involved in each of the following scenarios:
Answer:
The 11 organ systems include the integumentary system, skeletal system, muscular system, lymphatic system, respiratory system, digestive system, nervous system, endocrine system, cardiovascular system, urinary system, and reproductive systems.
Explanation:
Hope this helps
Homologous structures in organisms suggest that the organisms
Group of answer choices
have a skeletal structure
must have lived at different times
have a common ancestor
Phosphorus in soil is transformed into insoluble compounds unless what happens?
Answer:
It is not absorb by the plants, it turns into insoluble form.
Explanation:
Phosphorus in soil is transformed into insoluble compounds unless not used by the plants. The insoluble phosphorus is transform into soluble form in the soil by phosphorus solubilizing bacteria. The phosphorus solubilizing bacteria helps in conversion of insoluble phosphorus into soluble phosphorus which can absorb by the plants. If the phosphorus is not absorb by the plants and present for a long time, it can be converted into insoluble form which is unavailable for the plants which can be converted back with the help of phosphorus solubilizing bacteria.