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Aliun [14]
3 years ago
12

Select all that apply.

Biology
2 answers:
Fed [463]3 years ago
6 0
I think it would be the third and fourth one
jolli1 [7]3 years ago
3 0

Answer: takes time and energy

requires a mate

Sexual reproduction is a mode of reproduction in which two gametes of opposite sex fuse together to produce offsprings. The offsprings produce by this method are not genetically and physically identical to their parents. The sexual mode of reproduction brings variations among the organisms. The disadvantages of sexual reproduction are:

Takes time and energy: Compared to asexual mode of reproduction the sexual reproduction takes a long time. This is because of the fact that several organisms exhibit distinct mechanism for copulation which requires energy. Also, the gestation period in organisms is long and requires energy to produce offsprings.

Requires a mate: Sexual reproduction requires a mate because to produce offsprings the gametes from two opposite sex should fuse with each other. This is a disadvantage of sexual reproduction because of the fact that individuals have to find mates which is not an easy task, there is competition among the members of the same population to obtain mate, and there is danger of survival.  

   

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What can the muscular system be compared to in a car?
masya89 [10]

Answer:

Engine is very much similar to the muscular system in a car.

Explanation:

The system is made up of the tissues which work with skeltal system to control the movement  of the body is called Muscular System. In a car the engine is very much similar to the muscular system. They both help their systems to move. Without them the car or body would not going to operate.Like the human body car parts are also specialised & perform specific tasks, but they all depend on each other.Many would compare the engine of the car with heart of human body.The heart is the engine of the body just like the car. Our brain is very much similar to the the car's computer system or CPU.Every car  is powered by an engine and most cars use an internal combustion engine which runs on gasoline.A car's overall power is a function of the size of engine as well as the factors such as timing of combustion and the type of transmission used.

7 0
3 years ago
Read 2 more answers
Which of the cells are involved in graft rejection?
Aleks04 [339]
T cells
The immune response to a transplanted organ consists of both cellular (lymphocyte mediated) and humoral (antibody mediated) mechanisms. Although other cell types are also involved, the T cells are central in the rejection of grafts. The rejection reaction consists of the sensitization stage and the effector stage.
8 0
3 years ago
A biologist in Pennsylvania observes the interactions of populations of maple trees,mosses, eastern spotted skunks, peregrine fa
Alecsey [184]

Answer:

The biologist is studying about the ecological community.

Explanation:

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The population surving in the community interact with each other through different modes of interaction. It may either parasitic, or mutual, or competitive or predication or commercialism.

7 0
3 years ago
In capturing essential resources, humans often modify their environments. Have you seen any examples of landscapes radically tra
Rina8888 [55]

Answer:

Humans have destroyed and modified various locations, such as forests, jungles, oceans. They begin to modify an environment in order to build new infrastructures, like buildings, factories, or even communities.

Explanation:

The reason for this is because they want to get as much resources for economic purposes, like for example mines, touristic places, factories. At first, this interaction affects the environment more, because of the loss of species or resources due to the human activity. Then, after this, it will affect the human, because of the lack of resources and global contamination caused by the environment being destroyed or modified.

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Crust is destroyed:
d1i1m1o1n [39]
The answer for this one is A
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