Answer:
the answer is D..........
Can someone answer this please.
Answer:
Humans first evolved in Africa, and much of human evolution occurred on that continent. The fossils of early humans who lived between 6 and 2 million years ago come entirely from Africa. Most scientists currently recognize some 15 to 20 different species of early humans.The first true primates evolved by 55 million years ago or a bit earlier, near the beginning of the Eocene Epoch. Their fossils have been found in North America, Europe, and Asia. They looked different from the primates today.
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Describe what the observations imply about how starlings are affected by flocking behavior in the wild and explain how evidence suggests that flocking behavior provides an advantage to starlings.
Answer:
Explanation:
Starling is a bird from the family sturnidea. It originated from Europes and Asia from where it introduced to other part of the world. They lives in the wild.
Starling birds moves in group or tight flock from a place the other. They usually form a flock called murmuration where they move together in group following each other to avoid predation.
Starling have been able to survive on the wild with this behaviour. They stir above the average height of their neighbor in a coordinated manner preventing them from being caught by preys.
Up to this point, did you notice any differences between the development of male and
female gametes?
Explain
Both male and female gametes are produced by different organs and in different sizes.
The main difference between male and female gametes is that male gametes which are known as sperm cells are produced in large numbers by the male reproductive organs whereas female gametes are called egg cells which are produced single at a time by the female reproductive organs.
Both male and female gametes are formed by meiosis type cell division. The female gamete is a large in size and motile while the male gamete is small in size and also motile so we can conclude that both gametes are produced by different organs, numbers and sizes.
Learn more: https://brainly.com/question/16509511
There are 25 elements found in living things. How many of these elements are found in some organisms but not all?
Answer:
Six
Explanation:
All living things have six basic elements in common: carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur, abbreviated as CHNOPS.
The number elements that are found in some organisms but not all is 19 in number. This is further explained below.
What are elements?Generally, elements are simply defined as compounds that cannot be broken down into smaller chemicals using standard chemical procedures.
In conclusion, Some of the elements found in living things are
Oxygen (O)Carbon (C)Hydrogen (H)Nitrogen (N)Read more about elements atoms
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During what epoch did India collide with Asia? When did Antartica drift over the South Pole? Estimate the date in millions of years ( Ma ).
Answer:
India Collided with Asia and Antarctica drifted over the South pole during the Oligocene Epoch, about 23.0
million years ago (Ma).
Read the following summary, which describes a body process. Then, answer the question.
Blood enters the right side of the heart and travels to the lungs. There, the lungs eliminate carbon dioxide and exchange it for more oxygen. The oxygen-rich blood enters the left side of the heart. Then, arteries carry blood away from the heart.
What process is being described?
Group of answer choices
Circulation
Excretion
Immune response
Respiration
Answer:circulation
Explanation:circulatory system
All metabolism of a cell occurs in the ___________ of the cell, which is made up mostly of ___________.
Answer:
Mitochondria
Explanation:
Select all the correct answers.
Nathan is an ecologist. He’s studying the effect of secondary consumers on primary consumers. His current research focuses on a population of blue jays and crows. They eat caterpillars and mice. If the number of blue jays increases, what are the likely effects on other populations?
The number of crows will increase.
The number of mice will decrease.
The number of mice will remain the same.
The number of caterpillars will decrease.
Answer:
I would say that "The number of mice will decrease.' is a valid answer choice along with "The number of caterpillars will decrease."
Explanation:
The more predators there is the less prey will be as the continue to eat.
Answer:
the number of mice will decrease
Explanation:
Is there a connection between intensity of UV radiation and skin color?
Answer:
Explanation:
Sun exposure which also includes its intensity is responsible for detrimental damage to the skin ranging from sunburn, etc and skin cancer.They also aid in the accumulation of DNA lesions which are unable to be repaired by the body systems which are distributed throughout the whole epidermal layers and the uppermost dermal cells in light, intermediate and tanned skin while they were restricted to suprabasal epidermal layers in brown or dark skin in interaction with the individual's genetics.
To solve this problem of damage to the skin, a way to do this was to evolve skin that was dark to protect against the sun's more damaging rays. Melanin, the skin's brown pigment, is a natural sunscreen that protects tropical peoples from the many harmful effects of ultraviolet (UV) rays as the sun rays is a lot high in these areas.
how does a scientist answer a scientific question?
how many teeth do yellow perch have on their tongue
Answer: it could be around 7 or 8
Explanation:Hope this helps
This type of reproduction in plants is centered around the flower's ovum
and pollen fusing together:
Answer:
sexual reproduction
Explanation:
The type of reproduction in which the ovum and the pollen of a flower fuse together is refer to as sexual reproduction.
The ovum of a flower is equivalent to the female reproductive part while the pollen is equivalent to the male's reproductive part. During fertilization, the female reproductive part (the ovum) fuses with the male's reproductive part (the pollen) to produce a zygote.
1. In Japanese four o'clock flowers, color is inherited by genes that show incomplete dominance. In such flowers, a cross between a homozygous red flower and a homozygous white flower will always result in pink flowers.
Answer:
Explanation:
Incomplete dominance occur when two allele expresses itself in the phenotype of an organism.
Its a situation where by an allele is not dominant over another other in an heterozygous condition but it gives a blend of the two allele in the phenotype of the offspring.
Example is the phenotype of a 4'o clock plant that gives pink flower when a red flower is crossed with white flower.
Why does tempreture increase when the amount of carbon dioxide or methane in the earth system increase?
When meiosis is complete what has been produced
Answer:
Sex cells or gametes (eggs in females, sperm in male) are produced after meiosis is completed.
Explanation:
Paige turns on an electric space heater in the center of her bedroom. The coils glow, and the room becomes warmer. How is heat reaching the corners of Paige's bedroom?
Think of it this way. Osmosis occurs when water flows to a different side given its a membrane or not. This is because it flows to a less dense area to reach equilibrium between the two sides. Heat is very similar. It will try to spread to places where there is not as much heat. Keeping the laws of heat travels up, the heat from the coils will reach the ends. We call this "Thermal Equilibrium"
Which statements explain what the fossil record indicates?
Answer:
the fossil record provides evidence about the history of life on earth.it also shows how different groups of organisms,including species, have changed
Explanation:
Answer:
The answer is the amount of water on Earth has decreased over time.
Explanation:
what type of metal is copper
Answer:
Copper
Explanation:Copper is a metal.
Answer:
Symbol : CU
NUmber : 29
Explanation:
Which feature increases the absorption of glucose in the small intestine
Answer:
The correct answer is villi.
Explanation:
The carbohydrates consumed by human beings are further dissociated into its mono forms, that is, fructose, glucose, and galactose. Of these monosaccharides, about 80% is glucose, which gets absorbed with the assistance of absorptive cells in the small intestine. In the walls of the small intestine, the food after digestion is passed into the blood vessels via the process of diffusion.
The mucosa or the inner wall of the small intestine is enveloped by finger-like tissues known as villi that further comprise microscopic finger-like outcrops called microvilli. These villi and microvilli enhances absorption of nutrients as they increase the surface area of the small intestine. Thus, the absorption of glucose within the small intestine is enhanced by the presence of villi.
effects of corona virus in the respiratory system and circulatory system ?
Which of the following statements is true?
Insects go through a larval stage.
Young amphibians do not look like their parents.
Animal cells do not have cell walls or chloroplasts.
All of the above.
None of the above.
Answer:
All of the above.
Explanation:
List three particles found in blood plasma and give their main purpose.
Answer:
Blood plasma is a 'yellowish liquid' component of blood that holds the blood cells in whole blood in suspension. It is the liquid part of the blood that carries cells and proteins throughout the body. It makes up about 55% of the body's total blood volume. It is the intravascular fluid part of extracellular fluid. It is mostly water, and contains important dissolved proteins, glucose, clotting factors, electrolytes, hormones, carbon dioxide, and oxygen. It plays a vital role in an intravascular osmotic effect that keeps electrolyte concentration balanced and protects the body from infection and other blood disorders.
What type of ecological internal interactions exist between the hawk in the mole
Answer:predation
Explanation:
Answer: CORRECT (SELECTED)
Predation
Explanation:
The hawk (predator) consumes the mole (prey).
Why Does Evolution Matter Now?
Why is the theory of evolution an important theory in for
doctors and the field of medicine? How does the theory affect the way illnesses and treatments are approached?
Answer:
Like all biological systems, both disease-causing organisms and their victims evolve. Understanding evolution can make a big difference in how we treat disease. ... And considering the basic processes of evolution can help us understand the roots of genetic diseases
Hope it helps :)
Wich action would most likely increase the amount of carbon in the environment
Answer:
Cutting down trees
Explanation:
Of course this is just my opinion, but stopping the production of oxygen can greatly effect the carbon and oxygen ratio thus, increasing the level of carbon in the air. There are many different ways for the increase of carbon to take place but I think that cutting down trees has a major effect.
How does the urban and natural water cycle compare?
Answer:
Explanation:
he natural water cycle is a continuing process of evaporation, condensation, precipitation and groundwater (Figure 1). ... The urban water cycle (Figure 2) shows the consequences of increased development. More development and more concrete means less infiltration of rainwater into the soil, and more run off.
~Hope it helps! And stay safe~
Both the urban and natural water cycles have a lot of differences in their properties and occurrence. This is because due to the presence of artificial surroundings in urban areas.
What do you mean by the water cycle?The water cycle may be defined as the continuous movement of water throughout the atmosphere. It involves all the processes and stages of water.
Due to the development in the urban areas, the natural water cycle gets affected. The natural water cycle deals with evaporation, condensation, sublimation, etc. but the urban water cycle has concrete walls, infertile soil, and a ruptured environment where there is less or no rainfall at all.
Therefore, Both the urban and natural water cycles have a lot of differences in their properties and occurrence.
To learn more about the Water cycle, refer to the link:
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True or False: Humans have radial symmetry
Answer:
false
Explanation:
not everyone has radial symmetry
According to the theory of natural selection, organisms that possess variations best suited for an environment are
a. more likely to survive and reproduce
b. less likely to survive and reproduce
c. without an advantage compared to other organisms in the population
d. more likely to go extinct
Answer:
The answer is A
Explanation:
Since their variations are best suited for the environment, they have a higher chance of surviving.
How does climate affect where people live?
Answer:
People who like colder weather will live in colder areas, and vice versa
Explanation:
What are some Characteristics of the Golden eagle?
Answer:
Golden Eagles have a square tail, fully feathered legs and large talons. Females are much larger than males and they both have the same coloured plumage. Golden Eagles are very agile in flight and they can remain in the air for hours. They have a graceful, soaring flight with their wingtips being slightly upturned.
Explanation: Golden Eagles have a square tail, fully feathered legs and large talons. Females are much larger than males and they both have the same coloured plumage. Golden Eagles are very agile in flight and they can remain in the air for hours. They have a graceful, soaring flight with their wingtips being slightly upturned.
Answer:
Golden eagles are very Graceful, in appearance. In flight golden eagles are known to be very agile. This characteristic “Agile”, gives them the ability to think quickly. This makes golden eagles smart.
Explanation: