Diatoms have two distinct shapes: a few (centric diatoms) are radially symmetric, while most (pennate diatoms) are broadly bilaterally symmetric.
What are Diatoms?Any member of the vast group of several genera of microalgae that can be found in the world's oceans, streams, and soils is referred to as a diatom.
Diatoms can photosynthesize, which allows them to change the dissolved carbon dioxide in the water into oxygen.
For higher-ranking organisms in the food chain, like invertebrates and tiny fish, they serve as a major source of food. In the energy and nutrition cycles of water resources, diatoms can also be vital players.
Diatoms can be divided into two shapes: pennate diatoms, which make up the majority, are broadly bilaterally symmetric, and central diatoms, which make up the minority.
Thus, these are the characteristics of diatoms.
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Why do we have wind on earth A. Because the earth moving around the sun B. Because animals are flapping their wings C. Because earth is spinning D. Convection currents
Answer:
D
Explanation:
:0
Select the correct answer.
The graph shows the percentage of dog breeds affected by elbow dysplasia, which causes dogs to limp. What’s the most likely explanation for the mixed breed’s disease incidence?
A. It has low diversity in its genes.
B. It has high diversity in its genes.
C. It’s good at saving human lives.
D. It doesn’t suffer attacks from wild predators.
E. It lives comfortably with people.
Answer:
B would be the answer
Explanation:
Write a concise essay on animal-like Protista and pay attention to their classification and their effects on human and their domestic animals and suggest some methods
Answer:
Animal-like Protists belongs to Kingdom Protista.
Explanation:
Animal-like Protists are those unicellular organisms which have animal characteristics like movement and heterotroph. They are not classified in the kingdom Animalia due to some characteristics such as made up of one cell. Animal-like Protists has a great effect on human and their domestic animals because they cause disease in them. Some animal-like Protists are also act as a decomposer means feed on dead bodies of human and animals and clean our environment so animal-like Protists cause an important effect on both human and animals.
PLEASE HELP IM GIVING 50 POINTS FOR THIS!!!!!!!! ALSO BRAINLIEST
Plan a controlled experiment that uses the simulation to investigate how changing the mass of an object changes its acceleration. The net force on the object must stay the same. Record your plan here.
It is possible to measure how acceleration changes with mass by throwing objects with different mass from the same height and measuring the acceleration.
What are the important factors for the experiment?This experiment requires you to measure how acceleration changes if the mass changes. This implies you need to consider the following factors:
Acceleration: This factor is the one you will measure in your experiment.
Mass: This factor is the one you will need to control, this implies using objects from different masses and comparing if mas has any effect on acceleration.
Other: Net force, wind, etc. are other factors that need to be constant to prevent them affect the results.
Steps for the experiment:
Choose a specific heigh: One of the ways of measuring acceleration is to throw objects and determine the acceleration as they fall, so the first step will be to establish a height.
Throw different objects with different masses: You can begin with light objects and move into heavier objects.
Measure acceleration: Every time you throw an object, measure acceleration using the formula A = change in velocity/ time.
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how is chromosomal number maintained during second meiotic division of the secondary spermatocyte
What two things are shown in this image that are created by an oceanic-continental convergent boundary ?
Answer:
jj see zj bxjdrbdvzb rhd
What is the process of Sexual reproduction of a Hammerhead Shark?
Answer:
The process of sexual reproduction of a hammerhead shark is that the hammerhead sharks exhibit a viviparous mode of reproduction with females giving birth to live young.
Explanation:
Answer:
The hammerhead sharks exhibit a viviparous mode of reproduction with females giving birth to live young. Like other sharks, fertilization is internal, with the male transferring sperm to the female through one of two intromittent organs called claspers. The developing embryos are at first sustained by a yolk sac.
Explanation:
hope this helps
The rate at which a stars burns its fuel (gas) is based on the star's
Mass
Volume
Shape
Color
Answer:
based on the mass of the star
What are the different layers that protect the brain and spinal cord? check all that apply
a. bone
b. cerebrospinal fluid
c. muscle
d. meningeal layers
Answer:
1. Bone 2. cerebrospinal fluid 4. meningeal layer
Explanation:
Whats the answer giving brainliest HELP!!!!!
Answer:
I feel like the first one is the best
Explanation:
widening the roads will just cause more cars.
raising the price is most likely not gonna help but its an option.
expanding just means more cars
Provide at least 1 example of a mutation
that does not have a negative effect on
the individual.
PLEASE HELP ME
17. Why did cover crops fall out of favor in the 20th century?
O A. Selective herbicides were developed to kill weeds.
O B. Cover crops worsen soil structure.
O C. Cover crops reduce water infiltration into the soil.
O D. Cover crops were no longer beneficial.
What are the functions of proteins in cells and viruses?
You have been tracking an adult female otter who weighs 25 kg. How many kilocalories must she
consume each day to maintain her body weight? Show your work
Answer:
The correct answer is - 6250 kcal.
Explanation:
Otters are carnivorous mammals that depend on the different types of organisms for their food including snails, insects, and fishes or birds. An otter requires 250 Kcal/kg to maintain its body weight for survival so,
Given:
weight of otter = 25 kg
Requirement 250 kcal per kg
Therefore,
The daily calory consumption of otter: weight * required calories
250*25= 6250 kcalories
Anaerobic bacterial fermentation occurs in the absence of:
Bacteria
Enzymes
Oxygen
All of the above
Answer:
Oxygen
Explanation:
Cellular respiration is a pivotal process that must be carried out by the cells of living organisms in order to obtain energy needed for their metabolic activities. This process of cellular respiration breaks down glucose either in the presence of OXYGEN (aerobic) or absence of OXYGEN (anaerobic).
Anaerobic respiration or fermentation is carried out by certain bacteria in the absence of OXYGEN to produce lactic acid as products.
The type of selection where traits in the middle range are favored is
Answer:
OK I can do it and tell u afterwords
1. Below is a diagram of the male
reproductive system. Which structure is
represented by D?
A. scrotum
B. testes
C. prostate gland
D. epididymis
Answer:
A:scrotum
Explanation:
its part of the male reproductive system. I looked it up.
The stage of spinal shock that follows spinal cord injury is characterized by a. absent spinal reflexes below the level of injury. b. autonomic dysreflexia. c. motor spasticity and hyperreflexia below the level of injury. d. reflex urination and defecation.
Answer:
The correct answer is a. absent spinal reflexes below the level of injury.
Explanation:
Spinal shock strictly refers to the neurological condition that occurs immediately after a spinal cord injury, in which the loss of not only motor and sensory functions occurs, but also the abolition of all reflexes below the injury (reflexes of muscular or myotatic stretching and cutaneous reflexes). There is also flaccidity, loss of reflexes. It is characterized by hypotension associated with cervical or upper thoracic spinal injuries. This characteristic shock results from the lesion of the descending sympathetic pathway in the spinal cord, producing a loss of vasomotor tone and sympathetic innervation of the heart. This causes vasodilation of the affected area with accumulation of blood and a decrease in venous return to the heart as well as cardiac output.
which of the following statements correctly describe meiosis
What are the reactants for photosynthesis?
Answer:
well the chloroplasts are the part of the cell that make photosynthesis happen
Answer:
light energy, water, carbon dioxide, and chlorophyll.
Explanation:
please help with this question
Answer:
a -5
d -2
c-3
b-4
e - 5
Explanation:
I'm guessing this is the answer
What causes ocean tides to reach higher up on a shore at certain times of day than at others? A. The moon's gravity and Earth's rotation B. The ocean's conveyor belt and refraction C. Earthquakes and volcanoes O D. Temperature and salinity differences
Answer:
A
Explanation:
I read about ocean tides. the Moon has an effect on the ocean which causes the ocean to bulge toward the Moon. When the Moon is in alignment with the sun the ocean bulges out more because of the added gravity. The Moon though smaller than the sun has more gravitational pull than the sun.
What variable is being measured in response to the experiment?
A. Length of Time plants are exposed to Sunlight per Day
B. Amount of Water Given per Day
C .Average Growth of Poppies per Day
D. Amount of Fertilizer Given per Day
Answer:
c growth because your measuring the plant which is dependent variable
In Labrador retrievers, the allele for black coat color (B) is dominant to the allele for brown coat color (b). However, if a lab has two copies of the recessive allele for a pigment-depositing gene (e), it can only have yellow coat color. In a cross of two doubly heterozygous black labs (BbEe x BbEe), what fraction of the next generation would one expect to be yellow
Answer:
4/16 or 1/4
Explanation:
This question involves two genes; one coding for coat color and the other for pigment color. The allele for black coat color (B) is dominant to the allele for brown coat color (b) while two copies of the recessive allele for a pigment-depositing gene (e) can only have yellow coat color.
In a cross between two heterozygotes (BbEe), the following gametes will be produced by each parent: BE, Be, bE and be. Using these gametes in a punnet square (see attached image), the fraction of the next generation (F2) expected to be yellow i.e. have the genotype (__ee) will be 4/16 or 1/4.
once, more than once, or not once, more than once, or not at all.
This group of questions refers to molecules of the following substances.
(A) Cytochrome
(B) FADH
(C) NAD
(D) NADP
(E) Oxygen (02)
Answer:
a
Explanation:
Two molecules of ATP are generated for every one molecule of glucose in ... a cell needs more NADPH than it does ribose 5-phosphate. ... Practice: Which one of the following is NOT a potential fate of pyruvate ? a.
In a completely dark room, you can’t see your reflection in a mirror. Give reason.
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An image is formed due to reflection of light by a plane mirror. In a completely dark room there is no light so no image will be formed by the mirror placed in the room. Hence we will not be able to see our image in a mirror placed in a completely dark room.
someone please help me, I’ve done this like 10 times.
consider this group of rocks granite marble and gneiss what property was used to group these rocks
Answer: The answer is Grain.
Explanation:
The four minerals that make up granite are feldspar, quartz, mica, and hornblende. Marble is a beautiful rock that is used by humans as building material and for decorative uses ... Rocks are classified into these groups by the way they were formed. ... Luster is a property of a mineral that tells how the mineral reflects light.
Answer:
The answer is Grain.
Explanation:
The four minerals that make up granite are feldspar, quartz, mica, and hornblende. Marble is a beautiful rock that is used by humans as building material and for decorative uses ... Rocks are classified into these groups by the way they were formed. ... Luster is a property of a mineral that tells how the mineral reflects light.
i got it right on edge 2021
Which of the following is true about soil color? a. Soil vary in color based on their mineral content. b. Soils do not vary in color based on their minimal content. c. Soils consisting of only a few minerals are always darker. d. Soils is consisting of many different minerals are always darker.
Answer:
A
Explanation:
cant explain gtg
Answer:A
Explanation:
Artificial selection applies only to dog breeding?
True OR False.
Answer:
Domestication is the act of separating a small group of organisms (wolves, in this case) from the main population, and select for their desired traits through breeding. ... Dog breeding is a perfect example of how humans select for desirable or fashionable traits.
true...?
Explanation:
Answer:
False.
Explanation:
The bananas we have today were created using artificial selection. Same thing with peanuts by the way.