Answer:
about 525 billion sperm cells
Explanation:
In fact, the average male will produce roughly 525 billion sperm cells over a lifetime and shed at least one billion of them per month. A healthy adult male can release between 40 million and 1.2 billion sperm cells in a single ejaculation.
Answer:
1,500
uring spermatogenesis, your testicles make several million sperm per day — about 1,500 per second. By the end of a full sperm production cycle, you can regenerate up to 8 billion sperm. This may seem like overkill, but you release anywhere from 20 to 300 million sperm cells in a single milliliter of semen.
Which of these engulf bacteria and break them down?
lymphocytes
phagocytes
T-cells
B-cells
Answer:
The answer is option b.
phagocytes.
Hope this helps.
Answer:
phagocytes
Explanation:
The letters A, B, C, and D represent four positions of the Moon in its orbit around Earth. The nighttime sides of the Moon and Earth are shaded. Approximately how many weeks will it take the Moon to move from position B to position D?
Can I also get an explanation please? WILL MAKE BRAINLIEST!
Answer:
14 days
Explanation:
it takes 28-29 days for the moon to orbit the earth so half of that is approx 14
Answer:
The amount of days is about 2 weeks.
Water is a universal solvent because it can be a solid, liquid, or a gas * True or false??
Answer:
Yes! ( True )
Explanation:
Water is called the "universal solvent" because it is capable of dissolving more substances than any other liquid. ... Water molecules have a polar arrangement of oxygen and hydrogen atoms—one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge
How do barnacles get nutrients?
O They catch small land insects.
O They attach themselves to seaweed and feed on it.
O They filter microscopic organisms from the waters.
O They crawl upon the ocean floor and feed on parasites.
Answer:
The answer is: They filter microscopic organisms from the waters.
Explanation:
Barnacles are filter feeders, which is why they are usually on dock poles and non-moving structures underwater. They do not need to travel to get food, because it comes to them!
Answer:
The answer would be that they filter microscopic organisms from the waters .
When listing the levels of organization in organisms from least complex to most complex, which level is just below organs in complexity?
Answer:
D tissues
Explanation:
Which process will the bacteria use to obtain energy?
A. Cellular respiration
B. Photosynthesis
C. Lactic fermentation
D. Alcoholic fermentation
I think it’s B someone tell me if it’s right
Answer:
B
Explanation:
Tu as raison!
Though some bacteria also feed off of dust, dead skin cells, corpses, human waste, etc, most survive from photosynthesis and no form of decomposition capable by bacteria is a possible answer.
which rocks are examples of chemical sedimentary rock check all that apply
Answer:
Shale and sandstone
Explanation:
Answer:
Clastic sedimentary rocks such as breccia, conglomerate, sandstone, siltstone, and shale are formed from mechanical weathering debris. Chemical sedimentary rocks, such as rock salt, iron ore, chert, flint, some dolomites, and some limestones, form when dissolved materials precipitate from solution.
Explanation:
Please help I wasn't paying attention. I'll MARK THE BRAINLIEST.
Choose THREE: What is the THREE roles/functions of the nervous system?
A.) Receiving information
B.) Responding to information
C.) Maintaining homeostasis
D.) Transforming food into energy for the body
2.) TRUE/FALSE: You can move without your nervous system.
A.) True
B.) False
3.) TRUE/FALSE: All nervous system responses are voluntary or under your control.
A.) True
B.) False
4.) A change or signal in the environment that makes the nervous system react is called a:
A.) Stimulus
B.) Response
C.) Nerve Impulse
D.) Synapse
5.) If you touched a hot object, what would the stimulus be?
6.) If you touched a hot object, what would the response be?
7.) Give an example of a stimulus and describe your body's response.
1. a,b and c
2. false
3. false
3. Stimulus
4. Receptor in the skin detects a stimulus (the change in temperature). Sensory neuron sends impulses to relay neuron. Motor neuron sends impulses to effector.
5. skin receptors quickly send nerve impulses (electrical) to the spinal cord (central nervous system) via sensory neurons
6. tropism, in plants is phototropism (or light response). Plants grow towards light sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival.
Answer:
A,B,C
FALSE
FALSE
STIMULUS
PULL YOUR HAND AWAY
The ringing of a telephone prompts to answer a call.
Explanation:
The sensory neurons found in the receptor organ ( which is the ear ) will detect the ringing of the telephone, and will therefore transmit a nervous message to the central nervous system .The brain interprets the nervous message , and then sends a message through the motor neurons to the effector organ , which in turn will respond by answering the call .
On April 20, 2010, an explosion on the Deepwater Horizon Macondo oil well drilling platform released 4 million barrels (636,000 cubic meters) of oil into the Gulf of Mexico. It took scientists and engineers nearly three months and several different attempts to cap the well. The Macondo oil well was located 1524 m (5000 feet) below the surface of the water, about 80 km (50 miles) off the coast of Louisiana. The spill affected 2113 km (1300 miles) of shoreline along the coasts of five states. Most crude oil contains 84–87% carbon by weight. Scientists have not yet fully assessed the environmental impact of the accident.
Reducing our dependence on petroleum is a difficult task, so policy makers are organizing it into smaller, simpler problems that can be solved more easily. Choose two of the solutions below that may help reduce our dependence on fossil fuels.
a
Researching alternative fuels to petroleum, such as ethanol.
b
Increasing taxes or fees to help pay for cleanup costs.
c
Requiring rooftop gardens to be built on all new buildings to reduce air pollution.
d
Developing transportation methods that do not require the use of petroleum products.
Answer:
I believe your answer is. A
Explanation:
Do living organisms depend on each to survive?Why or why not
Answer:
Yes (very true)
Explanation:
All living organisms depend on each other to survive, whether be a small bacteria or something as large as blue whales. Living organisms depend on each other and on their environments, or habitats, to meet their needs for survival. For example there's this concept called symbiosis, which explains the relationship between two organisms or more where both benefit most of the time from the association. For example, some plants and fungi have symbiotic relationship where plants provide food for fungi (such as carbohydrates) and in return, fungi colonize the roots of plants and provide extra absorption of nutrient and water.
What is an amino acid?
Answer:
An amino acid is a simple organic compound containing both a carboxyl and an amino group.
Explanation:
I hope this helps!
Answer:
Amino acid is
Explanation:
Amino acids, often referred to as the building blocks of proteins, are compounds that play many critical roles in your body.
They're needed for vital processes like the building of proteins and synthesis of hormones and neurotransmitters
The updrafts and downdrafts represented within this cloud are primarily caused by differences in?
A.altitude above sea level
B.air density
C.relative humidity
D.specific heat
Answer:
B.air density
Explanation:
Updraft and downdraft is the upward and downward movement of air.
It caused by differences in air densities. There could be differences in air current due to the heat that occur in the ground during the day time which makes air above more warmer than the air below. The air above is less dense as it rises above it becomes cool.
It also occur when air current moves over mountains.
Please Help!!!!! Emergency!!!
Which of the following organisms live in the desert biome? (Select all that apply)
a. foxes
b. camels
c. desert hares
d. birds
e. reptiles
f. beavers
g. cactii
h. deer
i. small trees
Answer:
a. foxes
b. camels
c. desert hares
d. birds
e. reptiles
g. cacti
i. small trees
Explanation:
Hope this helps! May I get brainliest? -w-
Answer:
camels, desert hares, birds, reptiles, cacti, small trees(maybe) foxes if you count fennec foxes
Explanation:
fennec foxes live in the desert
camels are the image of a desert
desert hares have desert in the name
birds:road runners
reptiles: rattlesnakes
beavers: need rivers!
cacti: in the mage of deserts
deer:forest
small trees: maybe
I hope this helps u! ;)
PLS give brainliest! i need to level up, and a thx too!
If plant sap has as much sugar as a can of soda, do you think that if you bit into a plant’s leaves or stems, would it taste sweet? Why or why not?
Answer:
No
Explanation:
If plant sap has as much sugar as a can of soda, they will not taste sweet if one bit into their stems of leaves.
This is because most plants do not store sugar, which is the product of photosynthesis, in leaves or stems. The few ones that store their photosynthetic products in leaves/stems do not store them directly as sweet sugar. They often stored them as starch which is not generally sweet in taste.
Hence, plant's leaves/stems will not taste sweet even if they have as much sugar as a can of soda.
Gender expression may or may not represent a person gender identity true or false
a hormone Cascade occurs when
Answer: A hormone can stimulate the release of series of other hormones, the last of which activates a nonendocrine target the cell this is called a hormone cascade pathway. The release of thyroid hormone results from a hormone cascade pathway the hypothalamus, anterior, and thyroid gland.
What plant is this? What's its purpose?
what causes rain to fall from the sky
Answer:
Rain is precipitation.
here’s the cycle:
1. Evaporation.
A body of water is evaporated by the heat of the sun. The water particles turn into vapor gas and move up as they are evaporated, and this leads to the next step.
2. Condensation.
The particles/molecules are collected inside of the clouds. They continue to collect until they’re ready for the next step.
3. Precipitation.
The droplets are now large enough to form rain, so they fall out from the clouds. This is precipitation.
And the cycle continues.
So that’s how rain is formed.
Hope this helps and please hit the thanks button and mark me brainliest if it did :)
Answer:
The water cycle
Explanation:
The water evaporates into the clouds and when the clouds are full it rains.
To test the effectiveness of a new nutrient supplement, one group of identical mice is given the supplement, and the other group is
not given anything. Which is the most complete list of the parts of an experiment presented in this scenario?
Answer:
The options are
A.independent variable, dependent variable
B.control group, experimental group, dependent variable
C.independent variable, control group, experimental group
D.control group, experimental group
The answer is C.independent variable, control group, experimental group.
The most complete list of the parts of an experiment presented in this scenario would surely be the independent variable, the control and experimental group inclusive.
Answer:
The correct answer is C.Which of the following is an inference?
Answer:
Well you didn’t state any possible answers but
an example of is inference is, if you see someone eating a new food and he or she makes a face, then you infer he does not like it.
Explanation:
Transpiration occurs when plants release water vapor.
True or False?
Answer:
true
Explanation:
Answer:
false Explanation: The water eventually is released to the atmosphere as vapor via the plant's stomata tiny, closeable, pore-like structures on the surfaces of leaves. overall this uptake of water at the roots, transport of water through plant issues, and releases of vapor by leaves is known as transpiration.
According to the geological time scale, ______ evolved after the first insects evolved. mammals, bacteria, cells with a nucleus, or, multicellular organisms?
Answer:
Mammals would be the correct answer.
Explanation:
Answer:
mammals is correct
Explanation:
taking the quiz got it right.
Imagine you are an engineer who needs to test a scale model of a
footbridge. It will be a 1/20 scale model. The footbridge will cross
over a busy road and allow people to cross the road safely. How
could a relatively small design error of 2 centimeters in the model
system cause a significant problem in construction of the bridge?
Answer:
The problem will be because:
The error in the construction of the bridge will be actually 40 cm.Explanation:
When you, as an engineer, listen about a scale 1/20, it means that for each 1 cm in the model, it will be 20 cm in the real footbridge (20 times upper to the scale model), then how the error in the model is 2 cm, the real error is 40 cm, in this case, imagine that you didn't know that the bridge will have an error of 40 cm, which is approximately 1,31 ft, from a side of the bridge you begin with the correct measure, and the other side you use the measure with the error of the 40 cm, the result is that when you going to finish the bridge in the center, this won't match, making more expenses to correct that big error.
What would be the first thing you would do if your clothes caught fire while working in a laboratory?
O A. Call out to your teacher
OB. Drop and roll on the floor to extinguish the fire
O c.
Run towards a source of water to extinguish the fire
Reset
Next
Answer:
If your clothes caught on fire and you had the oppertuinity to quickly take it off it would be better but in this case.
Explanation:
B, drop and roll on the floor till the fire is gone
The first group to exhibit an amniotic egg was the
Which structure will form when a primitive cell engulfs an aerobic bacterium?
Answer:
Mitochondria
Explanation:
This was the first endosymbiotic event during our primitive cell basically engulfed an aerobic bacteria which later formed into mitochondria. This is why mitochondria has its own DNA as well (called the mitochondrial DNA)
Answer:
Mitochondria
Explanation:
Waves can be classified as transverse, longitudinal, or surface waves. This depends on the ___________ of movement of the ________ in the medium compared to the direction of the energy.
Answer:
direction, vibration
Explanation:
Hope this answer helped!
- hershy103
Which of the following statements is TRUE?
Multiple Choice
Peanut butter is an empty-calorie food,
A megadose of vitamin C is within the range of safe intake for the nutrient.
Most foods are mixtures of nutrients.
A healthy diet supplies 90% of its calories from protein-rich foods.
Most foods are mixtures of nutrients.
The distance that wind blows across an area of the sea to generate waves is the_________.
a)trough
b)wave period
c)fetch
d)sargassum
Answer: C-fetch
Explanation:
Answer:
Fetch.
Explanation:
Fetch, area of ocean or lake surface over which the wind blows in an essentially constant direction, thus generating waves. The term also is used as a synonym for fetch length, which is the horizontal distance over which wave-generating winds blow.
A -Weight of water collapses lime stone below it, water drains into the sinkhole
B-pollution due to factories, water evaporates quickly
C-High atmosphere temperature, water evaporates quickly
D-natural absorption of water by the land, water drains into the Aquifer